Test: College Algebra

1.

Consider the following sentence:

"The cost of your bill for last months energy usage starts at $12.50 for the service fee and add to it the product of the electricity you've used and the rate of $0.25 per kWhr."

What are the variables in this sentence?

rate of $0.25 per kWhr and cost of your bill

the service fee and "the product of"

$12.50 for the service fee and rate of $0.25 per kWhr

"the product of" and "increases with"

The cost of your bill and the electricity you've used

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