Elaine is at the local grocery store. She buys 6 apples and 3 pears for $3.45. Peter bought 3 apples and 6 pears at the same store and paid $3.30. How much is an apple? How much is the pear ?

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?