Which expressions are equivalent when m = 1 and m = 4?

The only option 2 which gives the same values for m=1 and m=4 in both the expressions. ∴ Option 2 is correct.

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

1. 22

2. 1

3. 7

4. 18

step-by-step explanation

e2020 got it right