Which of the following represent Exponential Decay? Choose all that apply. Group of answer choices

LaTeX: y=\left(\frac{3}{2}\right)^xy = ( 3 2 ) x

LaTeX: y=3^{-x}y = 3 − x

LaTeX: y=\left(\frac{7}{8}\right)^xy = ( 7 8 ) x

LaTeX: y=1.2^x

With #! i’ve tried to figure it out but i can’t.

Ablock of wood is a cube whose side is x in. long. you cut off a 1-inch thick piece from the entire right side. then you cut off a 3-inch thick piece from the entire top of the remaining shape. the volume of the remaining block is 2,002 in3. what are the dimensions of the original block of wood?

This is different from the first one can someone me