Answer:
first one is not. parallel second one is not and the third one is

Hope you could get an idea from here.
Doubt clarification - use comment section.
125% of x =137,5
125/100 * x= 137.5
5/4 *x=137,5
5x/4= 137,5
x=4*137,5/5
x=4*27,5
x=110
Answer:
He will get back 11 dollars.
Step-by-step explanation:
7 twenty dollar bills is just 7 x 20. That's equal to 140. Now your gonna subtract 140 - 129. You end up with 11 dollars!