PLEASE HELP ON MATH!
Beth's monthly charge for Internet access c is represented by the function c = 12 + 2.50h, where h represents the number of hour of usage during a month. What is the total charge for a month in which Beth used the Internet for 9 hours?
A$39.95
B$34.50
C$27.00
D$22.50
Beth's monthly charge for Internet access c is represented by the function c = 12 + 2.50h, where h represents the number of hour of usage during a month. What is the total charge for a month in which Beth used the Internet for 9 hours?
A$39.95
B$34.50
C$27.00
D$22.50