The sum of all the angle measures is 180 degrees, now lets set up some equations:

Thus x = 22
Hope that helps!
Answer:
original price = $129
20% discounted price = $103.2
adding 7% sales tax = $110.424
OPTION B = 110.42
It's true and true and false
Multiply the ratio by $5.35
racket : balls = 18×$5.35 : 1×$5.35 = $96.30 : $5.35
The racket costs $96.30.