Question

A homeowner is replacing 4 solar modules at a cost of $6,200 for each solar module. She is going to get a discount of x dollars off each module. Write and expression that describes this situation and then simplify.

Answer 1

`C = 24800-4x`

Explanation:

Given

`Module =4`

`Unit\ cost = \$6200`

`Unit\ Discount = x`

Required

The expression for total discount

When the discount is applied, the cost (c) of 1 module is:

`C = 6200-x`

For 4 modules, we have:

`C = 4 * (6200-x)`

Open bracket

`C = 24800-4x`