Bella’s cell phone costs $18 per month plus $0.50 for every minute she uses the phone. Last month her bill was $29.95. How many minutes did she use her phone last month?

1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)