Nicole begins jogging for Mr. allergies class. on her first run, she runs one- half mile. she increases her work out by adding one-half mile a week to her run. she wrote the equation f(x) = 0.5 + 0.5x to model her progress. What does x represent? A. Miles she runs.
B. Weeks she runs
C. miles she ran the first day
D. Calories she burns