Find the value of x if given: 20y-2, 17y +3, 5x + 8, 21x

Which term best describes the association between variables a and b

Measures of the angle of r, 31 s (x+4) t (3x+9)

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.