Ivan and Jeff buy a package of 8 pens for $4.00. Ivan wants 5 pens, and Jeff wants 3 pens. How much should each student pay?

A medical researcher is studying the spread of a virus in a population of 1000 laboratory mice. During any week, there is a 60% probability that an infected mouse will overcome the virus, and during the same week there is a 10% probability that a

Theo's vegetable garden has an area of 40 square feet. what is the area, in square feet, of the pat of the garden that is planted with carrots?

A code has 6 digits. You can type in 0~9 for your code. How many different combinations of codes can you make if you can repeat digits? How many different combinations of codes can you make if you can not repeat digits?

If it is not warm, then it is not hot

110% of 90 is what number

Simplify the expression 4 (2x-7) + 3

What is 6 3/20 as a decimal

The manager of the neighborhood baseball team bought 150 baseballs in boxes of 6. How many boxes did he buy?

A yogurt company charges $.72 for a 6 ounce container of yogurt how much does it charge for an 8 ounce container

What is 373 out of 500 simplified