1.
On a recent electric bill, Mrs. Wick found that she used 2399 kWh of electricity and the
total bill was $177.93 including a $10 basic service charge.
a.
b.
C.
Graph the two points given in the statement of the problem. Be sure to scale and
label each axis.
A
Write an equation for the total cost of the electric bill in terms of the number of
kilowatt-hours of electricity used. Be sure to define your variables.
What is the slope of your line, including units? Interpret the meaning of the slope
in the context of the problem situation.
d. Use your equation to algebraically determine the cost of using 1900 kWh of
electricity.