Can somebody please help me with this​

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

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.