2x + 4y - 2x - 3y = 22 - 50
y = -28
substitute into the 1st equation to find x
The surface area is multiplied by 5.
The surface area is divided by 5.
The surface area is divided by 25.
The surface area is multiplied by 25.
Set up a proportion

x is the estimated number of returned phones. cross multiply to find x
12 x 2000 = 24000
350 x X = 350x
24000=350x
Divide
x=68.57
B.) 68
B, C, A are collinear because they lie on the same line.
D, C, A are not collinear because they do not lie on the same line
You are most likely to pick up a red because the quantity is more and a blue marble can be anywhere