In how many ways can 7 people be chosen and arranged in a straight line, if there are 11 people from whom to choose?

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

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

Mr. zimmerman invested $25,000 in an account that draws 1.4 interest, compouneded annually. what is the total value of the account after 15 years