Solve the problem.
A gas company has the following rate schedule for natural gas usage in single-family residences:
Monthly service charge | $8.80 |
1st 25 therms | $0.6686/therm |
Over 25 therms | $0.85870/therm |
What is the charge for using 25 therms in one month?
What is the charge for using 45 therms in one month?
Construct a function that gives the monthly charge C for x therms of gas.