I need help please...

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

Corresponding angles are a. always b. sometimes c. never congruent

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?