Question

Luis found a new text messaging plan which will charge him 2.00$ for 80 messages. Using the plan, how much would he pay for 900 text messages in one month?

Answer 1

Let x be # of text messages
y = 2(x/80)
Plug 900 in to x,
y = 2(900/80)
y= 22.50

Luis would have to pay $22.50