Acompany that manufactures radios first pays a start-up cost, and
then spends a certain amount of money to manufacture each radio.
if the cost of manufacturing r radios is given by the function
c(r) = 5.25r + 125, then the value 5.25 best represents
(1) the start-up cost
(2) the profit earned from the sale of one radio
(3) the amount spent to manufacture each radio
(4) the average number of radios manufactured

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

b) 36

step-by-step explanation:

18 times 2 is 36