Each one should pass through the OPEN BLACK POINT and one of the BLUE POINTS. (One is done for you.)
When you're ready, press "Check My Work."

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

In the diagram, be and ad pass throughthe center of circle o, and the area ofsector aoc is 47.45 square units. what isthe area of sector boc? use the value =3.14, and round your answer to two decimalplaces.22.33 square units25.12 square units