which of the following is an example of a set of like terms? A: (19y, 19, y) B: (18x, -x, 21x) C: (15, 20, 25y) D: (-2x, -2y, -2xy)

Could somebody me with this radical simplification?

In a column proof the right column states your reasons

Match each whole number with a rational, exponential expression 3 square root 27^2find the domain and range of the exponential function h(x)=125^x. explain your findings. as x decreases does h increase or decrease? explain. as x increases does h increase or decrease? explain.