Select the correct answer. Which graph represents a proportional relationship?
OA.
40
35
30
25
20
15
10
5
0
10
20
30
40
50
60 X
OB.
40
35
30

With number 11 ( show how you got the answer)

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches. approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *

What is the surface area of the sphere?