I need help with finding the percent. Please help me with this

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

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.

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?