If we let m and n be any integers, explain how we know that 2m and 2n will always be even integers. Show they are always even integers using algebraic equation or expression?

What is the value of x when x + 7 = 21?

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

Aline is perpendicular to another line m2= (-1/m1), where m1 is the slope of the original line and m2 is the slope of the perpendicular line. which of the following equations represents the line that passes through the point (-2,1) and is perpendicular to the line below?