Whats the better deal 160/5 or 315/9

Data was collected on myrtle beach for 11 consecutive days. each day the temperature and number of visitors was noted. the scatter plot below represents this data. how many people visited the beach when the temperature was 84 degrees?

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

In angle pqr find the measure of