The start-up cost to join etunes music is $7.95 plus $0.95 per song downloaded. if will spent $26, write and solve a linear equation to find how many songs he downloaded .

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?