Question

In order to become a member of

the library-all-star-members club,
there is a $40 sign-up fee and a $2
monthly fee. Write an equation in
slope-intercept form that models this
situation.

Answer:Y=2x+40

4. Use equation you wrote in problem
3 to find the total cost of being an
all-star library member for 19 months.

Answer 1

Your equation is Y=2X+40.

Plug in 19 months into the equation. To do that you replace X with 19.

Y=2(19)+40

Y=38+40

Y=78

The answer is $78.