What is the length and midpoint segment of AD?

Don't know how to find x given these segment lengths

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.

Which table represents a linear function? i'll give brainliest to first answer ^'^