a cellphone data plan costs $0.01 per gigabyte, and has a $50.00 initial charge. what will be the total cost of the cellphone data plan after using x gigabytes of data?
a. y = 0.05x + 30
b. y = 50 + .01x
c. y = 40 + .03x
d. y = x
1 answer
b. y = 50 + .01x
1 answer