Concept explainers
The electric bill charge for a certain utility company is $0.095 per kilowatt-hour plus a fixed monthly tax of $11.95. The total cost, y, depends on the number of kilowatt-hours, x, according to the equation
a. Determine the cost of using 1000 kilowatt-hours.
b. Determine the cost of using 2000 kilowatt-hours.
c. Determine the y-intercept. Interpret the meaning of the y-intercept in the context of this problem.
d. Determine the slope. Interpret the meaning of the slope in the context of this problem.
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