Select the scenarios that correctly represent the given graph. the sale of a product increases at first and then decreases. the speed of a car increases constantly by 10 miles per hour. the radioactivity of a substance decreases by 10% every year. the amount of money in an account decreases for a few months and then increases. the height of a stone shot by a catapult reaches a maximum height and then falls on the ground. to be honest i don't know how to take a photo o-o