can someone please answer the first four for me? Also can someone please explain it to me, because I don't fully understand​

Read the situations in the table below. then drag a graph and equation to represent each situation. indicate whether each of the relationships is proportional or non-proportional. edit : i got the right answer its attached

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?

Find the missing factor. write your answer inexponential form.9^2=9^4×