Question

A local pizza shop has a membership program for frequent buyers. The membership costs $20 per month and members get a discounted price of $1.50 per slice of pizza. Shandra purchased a membership to this pizza shop. How much would Shandra have to pay the pizza shop if she bought 5 slices of pizza this month? What would be the monthly cost for x slices of pizza?

Answer 1

Shandra would pay $27.50 for 5 slices

Cost = 20+1.50x

Explanation:

Given

`Membership = \$20`

`Discounted\ Price = \$1.50` per slice

Solving (a): Cost of 5 slices

Represent the total price with y and the number of slice with x.

So, we have:

`y = Membership + Discounted\ Price * x`

This gives:

`y = 20+ 1.50* x`

In this case: x = 5.

So, we have:

`y = 20+ 1.50* 5`

`y = 20+ 7.50`

`y = 27.50`

Shandra would pay $27.50 for 5 slices

Solving (b): Cost of x slices

This has been solved in (a).

`y = 20+ 1.50* x`

`y = 20+1.50x`

Hence, the cost of x slices is 20+1.50x