A windshield wiper blade is 18 inches long. To the nearest square inch, what is the area covered by the blade as it rotates through an
angle of 122 degrees? (Enter just a number for your answer.)

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?