Question

Leslie decides to join a gym. She must pay a monthly fee plus a one time fee to open a membership. This situation can be modeled by the expression 55x + 80. Explain how each number and letter in the expression relates to the problem.

Answer 1

Explanation:

Given function is,

`y=55x+80`

Where,

y = amount paid to the gym in dollars

x = number of months

So when x = 0, y =55(0)+80 = 80

i.e when number of months is 0, you have to pay a fee of $80.

This is the one time fee to open a membership.

After that for each month you have to pay $55 for each months.

So 55 is multiplied with x.