What is this, how do i solve it, what the answer

1

Step-by-step explanation:

This is a function where you have to plug in the value you are given for x.  In this case, you are given 1 as your value (after the semicolon).  So, you set up your equation like so: (1)^3 + 3(1)^2 -7(1) + 4

(1)^3=1

3(1)^2 = 3

-7(1) = -7

4= 4

so you have 1+3-7+4 which is 1

(a) the volume of the cone is 20/3 in3

hence, option a is correct.

54.864 meters

step-by-step explanation: