From this problem we have the following info given:
b= 45 represent the starting fee
m = represent the monthly payment
T= 285 represent the total cost after 10 months
x=10 represent the number of months
With this info we can create a function for the total cost like this:
[tex]T\text{ = b + mx}[/tex]
And replacing we have:
[tex]285=\text{ 45 + 10m}[/tex]
If we solve for m we got:
[tex]m\text{ = }\frac{285-45}{10}=24[/tex]
