Please Help I'll Give 20 Points! Which expressions are equivalent? A) 1/5k - 2/3j And -2/3j + 1/5k B) 1/5k- 2/3j And -1/5k + 2/3j C) 1/5k- 2/3j And 1/5j- 2/3k D) 1/5k- 2/3j And 2/3j- 1/5k

Me because some of question i don’t understand

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.

The circle below is centered at the point (3, 1) and has a radius of length 2. what is the equation?