Use this figure to find the value fod

Michael gose to a theme park and rides two different roller coasters that both begin on a raised platform his height while on the first roller coaster measured in feet from the platform height can be modeled by the following graph where t is the number of seconds since the ride began

8) during a clearance sale, a keyboard that normally sells for $49.99 is discounted for $34.99. what is the percent discount?

Ali was paid $75 for mowing a neighbor''s yard. this is one fourth of the amount of money she earned all summer