1/3 * 9x = 3x
1/3 * 3 = 1
3x + 1 = 4x
3x + 1 = 4x
4x=4x
36a+16b. The greatest common factor is 4
= 4(9a+4b)
Hello,
The answer is
<span>B. Y-intercept of (0, −1), starts down on the left, gets closer to y = −3 on the right
Hope this helps</span>
SA of a sphere is 4πr² Using a sample of radius 3 the SA would be 36π²
(4πx3²) If we double the radius and make it 6, the SA would be 144π²
So for Surface area, your classmate is correct.
What about the volume? V of a Sphere = 4/3 π r³
Again using 3 the Volume of a Sphere with radius 3 = 4/3 π 27
But the volume of a sphere with radius 6 = 4/3 π 216 which is eight times the volume of the smaller sphere. (27 x 8 =216) So your friend is right about Surface Area but wrong about the volume.