Selena has to decided to purchase books from a local bookstore at $4.00 each. The linear equation y = -4x+27 can be used to determine the number of books she can afford. Let the variable x represent the number of books Selena can purchase?

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?