you run for 3 hours at a speed no faster than 8.2 miles per hour.

Question

a. write and solve an inequality that represents the possible numbers of miles you run

b. a marathon is approximately 26.2 miles. your friend says that if you continue to run at this speed, you will not be able to complete a marathon in less than 4 hours. is your friend correct? explain.

Answer 1

a.

r = d / t

8.2 ≥ r

8.2 ≥ d / t

8.2 ≥ d / 3

24.6 ≥ d

b.

d = r * t

d = (8.2)(4)

d = 32.8