Can someone plzzz helppp me

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

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.