The function s(n) is defined below. which of the following are equal to s(7)? check all that apply.
s(n) = 3n - 1
a.
22
b.
20
c.
s(6) + 3
d.
s(4) + s(3)

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.