Complete the equation with a number that makes it true. 5⋅=15

15 points ! ~ see if you know the answer to both you!

The scatter plot shows the number of animal cells clara examined in a laboratory in different months: plot ordered pairs 1, 20 and 2, 60 and 3,100 and 4, 140 and 5, 180 what is the approximate predicted number of animal cells clara examined in the 9th month?

If wxyz is a square, which statements must be true?