Mike mowed the lawn for 1 1/2 hours. He charged $12. How much did he charge per hour?

The table shows the balance of a money market account over time. write a function that represents the balance y(in dollars) after t years.

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. a new supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which size bag provides the best deal, and how much will you save each month? compare the cost of the new supplier to the current one.