A cellular phone service provider charges $45 per month and $0.08 per minute of airtime. Enter the linear model that represents the monthly charge, c, as a function of t, the airtime used, in minutes.
Step-by-step explanation: t is the independent variable and c is the dependent variable. The rate/slope is 8 cents per minute, or $0.08, and the cost just to get service, or y intercept l, is $45
