What is the value of 9x - 4y if x=3 and y=2

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Erinn wrote the equation –5x + 4y = 32 to represent her hourly wage (y) and how this wage has changed during each year that she worked at a company (x). what is the rate of change in erinn's hourly wage per year?

Charlie tosses five coins. what is the probability that all five coins will land tails up.