I need help with this problem ASAP!

Factor this polynomial completely x^2-64

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 inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"