What type of angle is this shown in the picture?

PLease help!

Simplify the expression. enter the correct answer.

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

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.