Mr. quick bought a new computer system. the regular price was 1580, but he got a 15% discount. how much did he pay?

What is the prime factorization of 23 ?me with this question

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.

Select all of the following expressions that are equal to 2.5.