1.) the price elasticity of demand for margarine is -1.3 and the income elasticity of demand for margarine is -0.2.

a. Based on these figures, is the demand for margarine elastic or inelastic? How can you tell?

b. If the price of margarine falls by 5%, by what percentage will the quantity of margarine demanded change? Will it rise or fall?

c. If the price of margarine falls by 5%, by what percentage will the total revenue from sales of margarine (or total consumer spending on margarine) change? Will it rise or fall?

d. If consumer incomes rise by 10%, would the share of consumer income spent on margarine rise, or would it fall? Calculate an estimate of the percentage change in the share of income spent on margarine as a result of a 10% increase in income.

The constituents of a media for growing Hydrogenovibrio crunogenus are listed below.

     CONSTITUENTS                                                      ____                         AMOUNTS

      Sodium bicarbonate (NaHCO₃)                                                       5.0 grams

      Ammonium phosphate, monobasic [NH₄H₂PO₄]               1.0 gram

      Sodium chloride [NaCl]                                        5.0 grams

      Magnesium sulfate [MgSO₄ . 7H₂O]                            0.2 gram

      Potassium phosphate, dibasic [K₂HPO₄]                                  1.0 gram

      Iron III carbonate [Fe₂(CO_­3)₃]                                                          5.0 grams        

      Water [H₂O]                                                                                       982.8 grams                            

1. What type of microorganism is Hydrogenovibrio crunogenus based on the ingredients of this media-photoheterotroph, chemoautotroph,    chemoheterotroph, or photoautotroph?

2. What are the sources of nitrogen and phosphorus in this media?

3. Is the media chemically-defined or complex?

4. Is the media a liquid or semi-solid?

Fluid Mechanics Friction Problem: Write one MATLAB m-file that solves the Type I and II problems presented in class based on the file posted for the Type III problem (use Colebrook to estimate f). Type I: Solve hL for v=0.74x10-5ft^2/s, D=3 in, L=1000 ft, e=0.006 in, and Re=80000. f=0.0258 from Moody Chart. Type II: Solve Q for v=10^-6 m^2/s, D=0.2 m, L=500 m, e=0.046 mm, and hL=30m. Use “rough” Colebrook to generate an estimate for f.

In any given year, an insurance company believes the following:

-0.6 of drivers are safe.

-0.25 of safe drivers wear seatbelts

-0.10 of unsafe drivers wear seatbelts

-0.10 of safe drivers experience an accident in a year

-0.20 of unsafe drivers experience an accident in a year

-Given a driver experiences an accident, the driver has probability 0.01 they will be taken to the hospital if they were wearing a seatbelt

-Given a driver experiences an accident, the driver has probability 0.2 they will be taken to the hospital if they were not wearing a seatbelt

What is the probability a driver will be taken the hospital this year (as a result of an accident)? Given that a driver wears a seatbelt, what is the probability he/she will be taken to the hospital this year?

A. Look up and report K_f for copper(II), iron(II), and iron(III) with EDTA. Cite your reference(s). (0.2) (I DID THIS ALREADY)

B. What happens to your titration and results if any of those metals are present? Write a balanced chemical equation showing the impact of iron(III) present in the tap water when you are analyzing for calcium. (0.4)

C. What is done to keep iron ions from interfering? Write a balanced chemical equation for this reaction. (0.4)

D. What is done to keep copper ions from interfering? Write a balanced chemical equation for this reaction. (0.4)

Please help!!!! I really want to understand this

Problem 14

: A 75kg ice fisherman is sitting at rest on a frictionless lake. Suddenly, he notices a 15kg trout sliding at 3.0 m/s toward him on the ice. He catches the trout, and both slide

away together.

(a) What is the speed of the fisherman (holding the trout) after the collision?

(b) The fisherman realizes that he and the trout are sliding toward thin ice! He throws the fish

as hard as he can toward the thin ice. During the throw, he exerts a force of 200 N for 0.2

seconds.

(i) What are the final speeds of the trout and the fisherman?

(ii) Will the fisherman fall through the ice? Explain how you know.

The consumer magazine also claims that the cinnamon rolls at STARBUCKS do not weigh at least 8 ounces. A random sample of 25 customers purchasing cinnamon rolls yields the following results: - the sample mean equals 7.87 ounces - it is known from previous studies that the population standard deviation equals 0.25 ounces.

a. Set up a 95% confidence interval for the true mean?

b. What sample size is required if you want to be 99% sure that the sample mean will be within 0.2 ounces of the true mean?

c. Test the hypothesis that the true population mean is less than 8 ounces. Set the type one error equal to 1%.

John was swimming in the river. His swimming velocity was 1.2 m/s due east. The water was running at 0.4 m/s due west. John’s projected area in the water was 0.45 m2. Water density was 1000 kg/m3. The coefficient of drag was 0.2. (a) What was John’s velocity relative to the water? (b) What was the pressure drag force from the water? After a little while, John turned around and now is swimming at 1.2 m/s due west. (c) What is John’s velocity relative to the water now? (d) What is the pressure drag force from the water now? (e) What is the percentage of change in pressure drag force?

Partial Insurance: An individual has $2000 in physical assets, and $600 in cash initially. This person faces the following loss distribution to the wealth. Full insurance is available at $600

The Individual can also buy partial insurance with i. a $200 deductible, or ii. 75% coinsurance, or iii. Upper limit on coverage, with the limit being $1000. The premium on each partial coverage policy is $450. Provide a ranking of the four types of policies for the individual, in terms of preference if the preference function is given by U(FW) = LN(1+FW), where FW is final wealth of the individual.