What numbers have an absolute value of 2 1/2

How many different ways can you make change for $.50 using only nickels,dimes, and quarters?

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin