Question

A utility company charges $0.12 per kilowatt-hour for energy a customer uses. They give a credit of $0.025 for every kilowatt-hour of electricity a customer with a solar panel generates that they don't use themselves. Write a numerical expression that represents each question and then find the solution.

Answer 1

The total cost charged by the utility company is C = $0.12 × x - $0.025 × y

Explanation:

The amount the utility company charges per kilowatt hour of energy a customer uses = $0.12

The amount of credit the utility company gives per kilowatt hour of energy generated and not used by a customer with solar panel = $0.025

Let the amount of kilowatt hour of energy the customer consumes = x

Let the amount of kilowatt hour of energy from solar panels the customer generates but does not use themselves = y

The total cost, C, charged by the utility company is therefore given as follows;

C = $0.12 × x - $0.025 × y.