It costs $42 for 7 staplers. what is the unit rate for the stapler?

The table shows a pattern of exponents. what is the pattern as the exponents decrease?

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

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.