Two utility companies sell electricity in units of kilowatt-hours. The cost of electricity
for company P is shown in the table. The cost of electricity for company M can be
found by using the equation shown, where y represents the total cost in dollars for x
kilowatt-hours of electricity.
Electricity Costs
Company P
Number of Total Cost
Kilowatt-hours (dollars)
Company M
y = 0.15x
1250
150.00
1650
198.00
• Use the information provided to find the unit rate, in dollars per kilowatt-hour, for
each company. Show your work or explain your answers.
• Find the total cost, in dollars, of buying 2,375 kilowatt-hours of electricity from
the least expensive company.
Enter your answers and your work or explanation in the space provided.