Match the distance with the respective end point coordinates

Ineed me i stuck and i don’t want to get it wrong

Simplify the following expression 48^1/2

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?