Question

Sean began jogging to live a healthier lifestyle. On his first run, he ran one-half mile. He increased his workouts by adding two miles a month to his run. He wrote the equation f(x)= 0.5 + 2x to model his progress. The variable x represents the number of

miles he runs.
months he runs.
miles he ran the first day.
calories he burns.

Answer 1

months he runs.

Explanation: f(x) = 0.5 + 2x means he starts at 0.5 mile (when x = 0) and adds 2 miles for each additional month, so x counts months.