Question

CAN YOU TELL ME IF I ANSWERED CORRECTLY?

A cellular phone company offers offers a contract for which the cost C,in dollars, of T minutes of telephoning is given by C=0.25(T-300)+55.95,where it is assumed that T>=300 Minutes. What times will keep cost between 105.70 and 118.95?

between 499 and 552 minutes

Answer 1

crap. I wrote 57 instead of 75 and the whole thing was wrong.

Answer 2

as long as you solve this correctly you're good..

105.70 < .25(T-300) +55.95< 118.95

Answer 3

lol

Answer 4

499 < T < 552

Answer 5

there