Robert used a piece of poster board shaped like a parallelogram to make a sign. The base of the poster board is 52 inches, and the area is 1,872 square inches. Find the height of the poster board

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?