Need answer ASAP AND Please

Lassify the function as linear or quadratic and identify the quadratic, linear, and constant terms. f(x) = (3x + 2)(−6x − 3) linear function; linear term: −21x; constant term: −6 linear function; linear term: −18x2; constant term: −6 quadratic function; quadratic term: 6x2; linear term: 24x; constant term: −6 quadratic function; quadratic term: −18x2; linear term: −21x; constant term: −6

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

Will give brainliest immeadeately true or false: the origin woud be included in the solution set for the inequality: y< 2x-5