Ahomeowner's electric bill for the month was $147.60 for 1,800 kilowatt-hours of energy used.

which equation represents the cost in dollars of the electricity, y, and the number of kilowatt-hours of energy used, x?
a: y= 12.2x
b: y= 8.2x
c: y=0.12x
d: y=0.082x

The answer is A.

If you multiply 12.2 by the amount spent on electricity 147.60, you get 1800 which was the amount of energy that was used by the homeowner.

D

First take $147.60 and divide it by 1,800. The answer to that would be the x-value. So then just input the numbers. y=0.082x

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