Ms. sullivan bought some pens at the school supply store, including 5 red pens. 25% of all pens she bought were red. How many pens did ms. Sullivan buy in all?

If myesha works overtime, she gets paid "time and a half" for every hour she works. in other words, for every hour over 40 hours myesha works each week, she gets her hourly pay plus half her hourly pay. what is myesha's pay per hour when she works overtime?

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

Select all of the following expressions that are equal to 2.5.