Can someone please do these for me?

4friends evenly divided up a n-slice pizza.one of the friends,harris,ate 1 slice than he received. how many slices of pizza did harris eat? as an expression

Write an equation for the function that includes the points (2,100)and (3,100)

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.