-1/2ac^2 flip to make it positive which makes it a whole number = 2ac^2
Answer:
a) 910
b) 828100
c) 144320
Step-by-step explanation:
a. ∑y
This is the sum of all values of y. So

b. (∑y)^2
This is the square of the sum, so the square of 910, that we found in the previous item.
910² = 828100
c. ∑y^2
This is the sum of the squares of each amount spent. So

The equation of this line is x = 7 and it's slope is undefined aswell.
Convenience sample because it was easier for the researcher to go to.
Answer
144
Step-by-step explanation:
12*12