Which algebraic expression represents “Nicholas tripled his workout time”?    
2 answers:
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Answer:
C: Fold AX onto AB
Step-by-step explanation:
Let's draw a figure, so that you will understand the concept clearly.
We have to fold AX such that the side AX coincide with AB.
I have attached an image which visually represents this.
So the answer C. Fold AX onto AB.
Hope this will helpful.
Thank you.
Step-by-step explanation:
his father's age= 4x
his mother's age= 4x- 7
his age= x
x+4x+4x-7=101
x+ 4x+ 4x= 101+ 7
9x= 108
=
x= 12
Tesfa is 12 years old