Erica paid $753.95 for dance classes. she paid $123.95 registration fee and $45 for each week. what is w, the number of weeks erica was enrolled in dance classes?

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.

Which expression is equivalent to 16 in exponential form? a) 4 × 4 b) 8 × 2 c) 23 d) 24

If f(x)=x+7 and g(x)=1/x what is (fog)(x)