2(3x2 − x − 7) + (-6x2 − 4x − 2)

Simplified = -6x - 16

-3

Step-by-step explanation:

I used desmos a graphing calculator

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere