Answer:
D.
Step-by-step explanation:
The graph increases when y hits its lowest point and then starts to go back up again. In this case, when x = 10, it starts to go back up again.
<u>Ratio of turns</u>
<u>If A = 60 then the ratio is</u>
(40 x 11) +1 .5(11 x 10) = 165