Write an equivalent expression for n x a using only addition

Which functions are even? check all of the boxes that apply. f(x) = x4 – x? f(x) = x2 – 3x + 2 f(x) = (x - 2) f(x) = x done

Find a number such that if you add 8 and divide the result by 4 you will get the same answer as if you subtracted 3 from the original number and divided by 2

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?