Question:
A basic cellular package costs $20/mo. for 60 min of
Last updated: 7/17/2022
A basic cellular package costs $20/mo. for 60 min of calling, with an additional charge of 20+.30 (x - 60). If you have $0.20/min beyond that time. The cost formula would be C to keep your bill $80 or lower, what is the maximum calling minutes you can use?