F(3) if f(x) = 2x + 4
15 pts. please help due in 30 minutes

Ametalworker has a metal alloy that is 30? % copper and another alloy that is 55? % copper. how many kilograms of each alloy should the metalworker combine to create 90 kg of a 50? % copper? alloy?

Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?