Evaluate (x-2y)^2 if x=2 and y=-3

Is the open sentence 5x-2=3x+2 true when x=2? justify your answer.

On a piece of paper graph f(x)=5•(0.4)^x

Amuffin recipe, which yields 12 muffins, calls for cup of milk for every 1 cups of flour. the same recipe calls for cup of coconut for every cup of chopped apple. to yield a batch of 30 muffins, how much flour will be needed in the mix?