Can someone help with this?

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.

F(x)=5/6x+3 which of the following is true

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart