Nora is in the business of manufacturing phones. She must pay a daily fixed cost to rent the building and equipment, and also pays a cost per phone produced for materials and labor. The labor and materials cost $150 for each phone manufactured, and the total cost of producing 8 phones in a day would be $2200. Write an equation for C, C, in terms of p, p, representing total cost, in dollars, of producing pp phones in a given day.

C=150p+1000

Step-by-step explanation:

Solve for the y-intercept:

C=50p+b Slope intercept form of a line

2200=150(8)+b

Plug in known point

2200=1200+b Multiply

1000=b

Subtract 12001200

i leave the calculator work to you.

7. diameter 4 miles, circumference 4π miles

8. radius 0.2 miles, circumference 0.4π miles

[this is a bad problem because the actual radius of a car on the track is less than 0.2 miles so the answer is less than 0.4π miles]

9. radius 6 feet, circumference 12π feet

10. diameter 14 cm, circumference 14π cm

11. diameter 4.8 feet, circumference 4.8π feet

2 5/8 is the final answer! : )