Westside Energy charges its electric customers a base rate of $4.00 per month, plus 12¢ per...

Westside Energy charges its electric customers a base rate of $4.00 per month, plus 12¢ per kilowatt-hour (kWh) for the first 300 kWh used and 3¢ per kWh for all usage over 300 kWh. Suppose a customer uses x kWh of electricity in one month.

(a) Express the monthly cost E as a piecewise defined function of x. (Assume E is measured in dollars.)

E(x) =

A. if 0 ≤ x ≤ 300

B. if 300 < x

C. (b) Graph the function E for 0 ≤ x ≤ 600.

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milcah answered 1 year ago

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