Solve y=-x+2 and y=-2x-1 as a graph, substitution, or elimination?

In what form is the following linear equation written y=9x+2

Polynomial that can be factored as (3x-4)(3x+4)

Create a question with this scenario you could ask that could be answered only by graphing or using logarithm. 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.