Question

CenterPoint Energy charges a service fee of $4.95 plus 0.16 per kilowatt hour (kWh) usage. which equation can be used to find y, the total cost of the electric bill, if x represents the kWh usage?

Answer 1

The total cost is fixed cost + variable cost.

Fixed cost = 4.95

Variable cost is 0.16 per kWh

If x kWh used, the cost is 0.16x

Thus, total cost:

Total Cost = Fixed + Variable = 4.95 + 0.16x

Answer:

$y=4.95+0.16x$