20 ! each month, matthew gets a $25 allowance and earns $100 mowing lawns. he uses the expression 25x + 100y to keep track of his earnings.
part a: identify the variables and coefficients in the expression. (3 points)
part b: how many terms are in the expression, what are they, and how do you know? (4 points)
part c: which term in the expression shows the total earned from mowing lawns? (3 points)

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.