Which relations are functions? select yes or no for each relation: relations (2, 2), (3, 3), (4, 4), (5, 5) (1, 2), (1, 3), (1, 4), (1, 5) (2, 1), (3, 1), (4, 1), (5, 1) (2, 2), (2, 3), (5, 4), (5, 5)

How many different ways can you make change for $.50 using only nickels,dimes, and quarters?

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.

Afootball quarterback has two more chances to throw a touchdown before his team is forced to punt the ball. he misses the receiver on the first throw 25% of the time. when his first throw is incomplete, he misses the receiver on the second throw 15% of the time. what is the probability of not throwing the ball to a receiver on either throw?