Robert is purchasing some equipment for his baseball team. he want to buy some baseballs, each priced at m dollars. he has already spent b dollars on other equipment. the following expression represents the total amount robert will spend after buying x baseballs.

David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25

Im so bad at fractions they are not my best math thing to work on