14)
Given f(x) = -3x + 21, find x when f(x) = 6.
A)
-2
3
5.
D)
7

What is the greatest common factor of 6a, 8a^{2}, and 14?

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?

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1