Ineed with two algebra problems !
what is (f+g)(x)?
f(x) = 8x^2 + 16x + 6
g(x) = x^3 - 3x^2 - 9
(f+g)(x)= ?
(multiplication)
what is (f x g)(x)?
f(x) = x^3 - 4x +2
g(x) = x^2 + 2
(f x g)(x)?
for the !

One month, a music site observed that 60% of the people who downloaded songs from its site downloaded q sam's latest single. the equation below represents this information, where x represents the total number of people who ddownloaded songs from the site that month: x = 0.6x + 384 how many people who downloaded songs from the site that month downloaded q sam's latest single?

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =