If someone could answer this and show work too I'll be extremely greatful​

Find the power series expantion of f(z)=log(4=3z) at the point z=-1

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

Use the graph of the sine function y=2sinθ shown below