The first thing we must do for this case is to define variables.
We have then:
m: number of months
d: total amount in dollars
We now write the equation that models the problem.
We know that the monthly payment is $ 80.
We have then:
[tex] d = 80m [/tex]
Answer:
an equation for the number of dollars, d, that you pay for your karate classes if you take classes for m months is:
[tex] d = 80m [/tex]
