Eli works in an electronics repair shop. he earns 9.00 an hour plus a bonus for each item he repairs.
write a formula that will eli determine how much money he will earn in one week.
let's let
a=total amount earned
h=hours worked in one week
n=numbers of items repaired
b=bonus amount for each item

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