Amonth ago, cecelia had 7 pairs ofshoes. now she has 12 pairs. howmany pairs of shoes has she bought inthe past month? (let

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?