Which are solutions of the equation x2 - 16 = 0? Check all that apply. O x=-8
O x=-4
O x= -2
O x=2
Ox=4
O x=8

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

If g(x) is an odd function, which function must be an even function?

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)