Trey receives a $5\%$ commission on every sale he makes. On the sale of a $\$60$ coat (before any discounts), how many more cents will he receive if his commission is based on the original price of the coat rather than the price of the coat after a $20\%$ discount?

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

Factor the monomial completely 42a3b3

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)