Answer:
It looks like you cut off part of the questions...
Step-by-step explanation:
Answer:
C.
Step-by-step explanation:
Y= 18 because vertical angles are congruent.
For these problems you have to use PEMDAS so for problem 15 you would do the parentheses first, (21-3) you get 18 and then exponents, 3^2, you get 9, no multiplication but there is division so take your answers, 18 and 9 and divide them, you get 2, so the answer to 15 is 2.
