Keith spent 1/5 of this money on a story book. he gave $26.80 to his brother and had 1/2 of his money left. how much money did he have left?

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).

X+y=-4 x-y=2 use elimination with adding and subtraction

The functions below show the amount of money bella and sweet t had saved after earning money for doing chores. which description best compares the two functions?