{Find the Independent rariable that the time he need to save, then f(x) = 75 x is the total money he has, let f(x) = 2375 so find the time he have to save}
Solution:
Step 1: Understand the Problem.
Given: shoes cost 2375, already has 500, save 75 per week
Asked: how long to buy shoes
Independent variable: the time for week
Dependent variable: the total money he has
Step 2: Devise a Plan.
Let x represents the time for week he have to save
