The answer is C. 81.49 !!
With 8% tax of $192, $2,592.
Find the GCD (or HCF) of numerator and denominator
GCD of 18 and 20 is 2
Divide both the numerator and denominator by the GCD
18 ÷ 2
-----------
20 ÷ 2
Reduced fraction:
9
----
10
Answer:
z = 74 degrees
y = 115 degrees
Step-by-step explanation:
Explanation in the attachment.