Given the function f(x)=x^2 + 2x-5, find f(-4).
11
O 3
O-29

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?

Which system of linear inequalities is graphed? can somebody pleasssse

2f(x)= x+3 if 4 < x < 8 2x if x 28 2