Before tax, and miscellaneous charges, jason's cell phone bill is $100 per month plus $0.15 for every text message that he sends or receives. which expression represents his cell phone bill for any given month? a) 100 + 15t b) 100 + 0.15t c) 0.15 + 100t d) 100t - 0.15t e) 100(0.15) + t