Answer:let the cost be y
and the number of months be x
given that the cost is modeled as
y= 15x+25
we can solve for the charges after a series of months
say we want to calculate the charges for 5 month, we then have to put x=5 in the expression
y=15x+25.
y= 15(5)+25
y= 75+25
y=100
the charges for 5 months is $100
you can estimate for any number of months just put the number of months for x
Explanation: