A cell phone plan charges a flat monthly fee of $15.25 and an additional $0.07 per hour spent talking on the phone. Which of the following function gives the cost , c, of the cell phone plan as a function of the numbers of house , h , spent talking?

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?