What is the difference between -2^4 and (-2)^4

I know the answer but how do you explain it?

Each equation given below describes a parabola. which statement best compares their graphs? x = 2y^2 x = 8y^2

Savannah is painting a striped background for a mural on a wall that is 1515 yards long. she wants a total of 9696 stripes that are all the same width. which calculation should savannah use to decide how wide to make each stripe?

If you are dealt 4 cards from a shuffled deck of 52? cards, find the probability that all 4 cards are diamondsdiamonds.