Question

Can i get help please and thank you

Answer 1

I think its number 3 for sure

Answer 2

The answer is 2. 

90 would be the monthly service charge because it is being multiplied by a variable and a monthly charge means that a number is being multiplied every number of months (x). 40 would be the one time installation fee because it is only added once (because there's no variable multiplying it repeatedly.) Y is the total because the installation fee and monthly charge are combined to equal some number (y).