Real quick some help

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?

If f(x)=3 over x+2 - square root x-3 then f(7)=

There are 85 apples on the big tree, john picked out 15%. how many did john pick out?