The last time i did stem and leaf was forth grade can i get some help

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.

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.