In the function g(x) the exponent is (x - 1), so g(x) = 12 * 2 ^ (x -1)
h(x) = 3x
So, you have to find the product f(x) * h(x) for x = 6
f(6) = 12 * 2 (6 -1) = 12 * 2(5) = 12 * 32 = 384
h(6) = 3(6) = 18
f(6) * h(6) = 384 * 18 = 6912
Answer: 6912
1.

4 + 7 or 4 - 7 = 11 or -3
2.
pi is a real number. It is not imaginary or complex, so it definitely belongs to the set of real numbers.
pi is not a whole number or a rational number. It cannot be written as a fraction of integers. pi is irrational.
Therefore, pi is real and irrational.
373 + (169 * u ) = t
The equation above is your answer.
Just remember "product" means the answer to a division problem and "is" usually means that you should insert an equals sign.
The formula can also be proved using a trigonometric substitution . Each of above proofs will generalize to show that the volume of an ellipsoid with semi-axes A, B and C is just
(4/3)*Pi*A*B*C
If the two equations in parenthesizes were there own equations which ones would equal 1 and 6
(x-1) or x=1
(3x-1) or x=1/3
3(x-1) or 3x-3 or x=1
Do you understand?