Write the Word or Phrase That Best Completes Each Statement

Essay

Write the word or phrase that best completes each statement or answers the question.
-An electric company has the following rate schedule for electricity usage in single-family residences: $$\begin{array} { l l } \text { Monthly service charge } & \$ 4.93 \\\text { Per kilowatt service charge}\\\text { 1st } \text { 300 kilowatts } & (\$ 0.11589 / \mathrm { kW } \\\text { Over 300 kilowatts } & (\$ 0.13321 / \mathrm { kW }\end{array}$$ What is the charge for using 300 kilowatts in one month?
What is the charge for using 375 kilowatts in one month?
Construct a function that gives the monthly charge C for x kilowatts of electricity.