A phone plan costs $15 a month for up to 500 minutes of calls. Each min above 500 costs an additional $0.02.How much money do you have to pay for 600 min

The cash price of a television is $580.the hire-purchase price of the television is $865.the hire-purchase price is an initial deposit of n% of the cash price and 6 equal monthly payments of $120.find the value of n.

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.

The graph shows the distance kerri drives on a trip. what is kerri's speed?