Find the value of 2x2 + 5x − 7 when x = −3.

The value of the expression when x = −3 is

I think its x = -5/3 = -1.667. Sorry if I am wrong.

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !