Find an equation of the line in the form axplus byequals

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?

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Can someone check if i did this correct. it’s number 4 if you’re wondering.