What is the slope of the line that passes through the points (–20, 18) and (30, 14)? negative startfraction 25 over 2 endfraction negative five-halves negative two-fifths negative startfraction 2 over 25 endfraction. 85 points

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.

Hi, can anyone show me how to do this problem? 100 points for this. in advance

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?