Jennifer decides that she will go into the tourist industry on Lake Geneva, and buy a concession to hire out canoes on the lake. She borrows CHF40,000 (CHF is swiss currency) from her parents and puts CHF20,000 in herself. The arrangment with the Canton is that she pays CHF50,000 at the start for the concession, which runs five years, but must also pay an annual rental of CHF10,000 at the end of the season in october. She negotiates a deal with a canoe supplier who sells her 20 canoes for CHF 30,000 but agrees that she should pay CHF10,000 on delivery and the rest a year later. During the season she receives CHF 90,000 (cash) in canoe rentals.

Task: Making and specifying whatever assumptions you wish, you are asked to draw up a simple statement of profit or loss for the first year and statement of finacial postiton at the end of the year.

A tank initially contains 150 gal of brine in which 20lb of salt are dissolved. A brine containing 3 ​lb/gal of salt runs into the tank at the rate of 4 gal/min.The mixture is kept uniform by stirring and flows out of the tank at the rate of 3 gal/min. Let y represent the amount of salt at time t. Complete parts a through e.

a. At what rate​ (pounds per​ minute) does salt enter the tank at time​ t?

b. What is the volume of brine in the tank at time​ t?

c. At what rate​ (pounds per​ minute) does salt leave the tank at time​ t?

d.Write down and solve the initial value problem describing the mixing process. What is the solution to the initial value​ problem?

e. Find the concentration of salt in the tank 28 min after the process starts.

Write python 3 code to define a function that uses three arguments, and returns a result.

The function returns True if the first argument is more than or equal to the second argument and less than or equal to the third argument, otherwise it returns False.

Write a python 3 code for function main, that does the following:

• creates a variable and assign it the value True.
• uses a while loop which runs as long as the variable of the previous step is True,
• inside the while loop, get a number from the user and
• if passing that number to the function of the previous question along with 0 and 10, results in a True value returned, then add that number to a running sum. Otherwise make the loop stop without using break.
• After the loop stops, print the running sum of all the values the user entered.

Call main at the end.

Make sure to use conversion or casting functions as needed.

You are the manager of College Computers, a manufacturer of customized computers that meet the specifications required by the local university. Over 90 percent of your clientele consists of college students. College Computers is not the only firm that builds computers to meet this university’s specifications; indeed, it competes with many manufacturers online and through traditional retail outlets. To attract its large student clientele, College Computers runs a weekly ad in the student paper advertising its “free service after the sale” policy in an attempt to differentiate itself from the competition. The weekly demand for computers produced by College Computers is given by Q = 800 – 2P, and its weekly cost of producing computers is C(Q) = 1,200 + 2Q2. If other firms in the industry sell PCs at $300, what price and quantity of computers should you produce to maximize your firm’s profits?

Price: $

Quantity: computers

The Gold Standard 1870-1914 was associated with which of the following?

Which of the following elements of Glass-Steagal act of 1934 was designed to prevent bank runs?

Nationalist protectionist policies had which impact on the Great Depression?

Like many stable monetary regimes the Gold Standard broke down because of which of the following?

1)A circular loop of wire lies within the horizontal plane, and you are viewing it from above. You hold a magnet above the loop, with its north pole up and south pole down, and you drop the magnet. In what rotational direction will you see the induced current in the loop flow? (clockwise-counterclockwise)

2)The current going through a capacitor is called a (conduction current/displacement current)and arises from changing (electric field/magnetic field)

3) semiconductors are (diamagnetic/ferromagnetic/paramagnetic) materials

4) A circular loop of wire lies within the xy plane. It has an area of LaTeX: 1\:m^21 m 2 and an overall resistance of 4 Ohms. A uniform magnetic field runs in the positive z direction, and its magnitude increases at a rate of 2 T/s. What is the induced current?

Below is the C ++ code for a given assignment. An acre equal 43,560 sq ft. Im supposed to find the total number of acres within a tract of land that is 391,876 sq ft. the program compiles and runs just fine but I'm wondering if it would be better to use the int data type instead? I used double for more accuracy. The instructor didn't say we had to use any certain data type so I'm asking purely for practicality and for real world scenarios which would be better.

// this program calculates the number of acres in a tract of land
#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
   double acre = 43560,
           land = 391876,
           total;
         
  
   //Calculate the total number of acres
  
   total = land / acre;
  
   cout<<"the total number of acres is " << total << endl;
   return 0;

Task #3 Experimenting with an array of random integers (Week 2)
Make sure that the following 3 experiments are done repeatedly by generating a new set of integers to fill the array. For this iterate 10 times and observe results for consistency.
• Make the array size reasonably large (say a thousand) and an even number.
• Choose the version of nextInt() that allows you to set a cap on the random integers generated (set it to a few thousands, but way less than the maximum integer).
• Do the following experiments:
o Count how many integers in the array are odd and even. Are the odd and even counts almost equal?
o Find the minimum, maximum, and average of the integers in the array. Keep track of the minimum and maximum of the three quantities across runs.
o Sort the array by writing an inner and an outer loop. Count the number of times you needed to swap integers.

class Counter{

  private int count = 0;

  public void inc(){

   count++;  

  }

  public int get(){

    return count;

  }

}

class Worker extends Thread{

Counter count;

  Worker(Counter count){

    this.count = count;

  }

  public void run(){

    for (int i = 0; i < 1000;i++){

      synchronized(this){

        count.inc();

      }}

  }

}

public class Test

{  

  public static void main(String args[]) throws InterruptedException

  {

    Counter c = new Counter();

    Worker w1 = new Worker(c);

    Worker w2 = new Worker(c);

    w1.start();

    w2.start();

    w1.join();

    w2.join();

    System.out.println(c.get());

  }

}

The above code should print 2000 because inc() method is synchronized. However, it is printing a different number ranging from 1000 to 2000 everytime it runs. Can you explain why? How would you fix it?