Simplify 3x+2 for x=4​

What is the simplified expression for 6(2(y+x))

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.