On Day 16, Ebony deposited $100 into her account. On each day after Day 16, segment 5, Ebony made a deposit, and those deposits
were equal to each other. (a) Explain how you can determine, just by looking at the graph, whether the amounts she deposited after Day 16 were each less than $100, $100, or more than $100.
(b) Use the graph to estimate B(21) in hundreds. Explain how you determined this estimate. Then show how you can estimate the amount of money Ebony deposited into her account each day after Day 16.
