Emily installs artificial grass in her garden. the garden is 15 feet long and 30 feet wide. it takes her 4 hours to install the grass. what is the average speed at which emily installs the grass?

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

How do you determine whether a relationship represented as as graph is linear or nonlinear

Me. i can't figure out this question. give an explanation too. .