Select all sets in which the number 187 is an element:
a. rational numbers
b. irrational numbers
c. natural numbers
d. real numbers
e. whole numbers
f. integers

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.