Which expression is equal to: x + x + x + x

A. 4 + x B. x - 4
C. 4x D. x/4(fraction)

What is the size of the matrix resulting from

Which of the symbols correctly relates the two numbers below check all that apply 6? 6

Which functions shave a maximum and are transformed to the left and down of the parent function ,check all that apply f(x) = x2? p(x) =14 (x+7)2 + 1