Question

In: Math

2. The Cost, $C, of hiring a repairman for H hours is given by C =...

2. The Cost, $C, of hiring a repairman for H hours is given by C = 50 + 25h.

A. What does the repairman charge to walk in the door? B. What is his hourly rate?

3. The population a town, t years after it is founded, is given by P(t) = 5000 + 350t.

A. What is the population when it is founded? B. What is the population of the town two years after it is founded?

4. Find the slope and Y-intercept for each of the following:

a. -2y= -5x+9

b. Y = -16 - 4(-5 -3x)

c. 4x + 3y =-12

d. 5y - 3x - 10 = 0 5.

Find the equation of a line that passes through (6,7) and (6,1)

6.Find an equation of a line that is parallel to 3x + 5y = 6 and passes through (0, 5)

7. The total cost C of a yellow cab call lasting N minutes is $4.75 plus an additional charge of $2.50/mile.

A. Use a linear equation to describe the scenario B. How long was the cab ride if the total cost of the fare was $38.50?

Solve the following system of equations algebraically and check

a. 7x + 5y = -1

11x + 8y = -1

b. 5x + 2y = 1

2x - 3y = 27

8. Solve the following system of equationss graphically.

Y = -2X + 7

Y = 4X + 11

Solutions

Expert Solution

Q2 The Cost, $C, of hiring a repairman for H hours is given by

C = 50 + 25h

A) the repairman charge to walk in the door, That is when he yet to start work(h=0)

C=50+25*0

C=50

Hence the repairman charge to walk in the door is $50.

B) The repairman charge fixed amount into the door. And his per hour charge is $25

Q3. The population of a town, t years after it is founded, is given by P(t) = 5000 + 350t.

A) the population when it is founded =5000

B) the population of the town two years after it is founded is given by:

that is when t=2

P(t) = 5000 + 350*2

P(t) = 5000 + 700

P(t) = 5700

Q4.

a) given equation is

-2y= -5x+9

that is y=(5/2)x-(9/2)

hence slope=(5/2) and y-intercept -(9/2)

b. y = -16 - 4(-5 -3x)

that is y=-16+20+12x

y=12x+4

hence slope=12 and y-intercept 4

c. 4x + 3y =-12

3y=-4x-12

y=(-4/3)x-3

hence slope=(-4/3) and y-intercept -3

d. 5y - 3x - 10 = 5

5y=3x+15

y=(3/5)+3

hence slope=(3/5) and y-intercept 3

milcah answered 2 years ago

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