Consider functions f and g. f(x) = 11x ^ 3 - 3x ^ 2
g(x) = 7x ^ 4 + 9x ^ 3

Which expression is equal to f(x)* g(x) ?

The answer would be A

Step-by-step explanation:

You have to combine all of the like terms and 7x^4 has no other like term since its to the power of 4

9x^3 and 11x^3 both have the power of 3 so you multiply them together to get 99x^3 then 3x^2 doesn't have a like term so it stays as 3x^2

Which gets you the answer of 7x^4+99x^3-3x^2

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9