What is incorrect About this proof? What needs to be done to correct it?why ?

The graph shows the amount of money noah earned based on the number of lawns he cut. which list shows the dependent quantities in the graph?

How is this equation completed? i cannot find any examples in the book.

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?