The Torrez family plans to rent a mountain bike, bicycles, and a jogger stroller for a week on vacation in Hilton Head Island. If they budget
$250 for equipment rentals, and they know a jogger stroller and
mountain bike together will cost $90, which statement can they use to
determine how much they can spend on 3 regular bikes b?

is there more to this question?

statement #3: proof- ang is congruent to ang ecd : angles are congruent.  

step-by-step explanation:

1: the missing angles in statement #3  

a.) acb  

reason- the reason why the answer is acb is because angle ecd and angle acb are both the same size *that's what the word congruent means this is really simple.  

2: the missing word in reason #3  

c.) vertical  

reason- the reason why the answer is vertical is because the angles in that diagram on figure 2 is slanted, which is vertical, and the e and a both lay on vertical lines. along with the other's, but e and a are the 2 main points you want to focus on. and c is kind of like your starting point, because c is for both angles, not just one.  

i hope that was and understanding.