(-22, 302.5) Question 2
7.15 pts
Sandra was comparing the electricity of two different companies. One company is charging $49 per month and $0.10 per kilowatt used.
The other company wanted $39 per month, but will charge $0.15 for all kilowatts after the first 100 kilowatts. Sandra used the following
system of equations to represent the situation.
Ca = 49 + 0.102
Cb = 39 +0.15(
2100)
Which answer is a reasonable solution, and what does it represent?