Pick a number, if it's even divide it by two and if it's odd multiply it by three and add one, then repeat. which of the following is one of the numbers a) ∞
b) -∞
c) ±∞
d) none of the above

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

the answers c

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step-by-step explanatio89