Madison had 11 books in a pile to be checked out from the library. She had to take away 7 books because there was a limit.

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Find the value of x for which the lines are parallel.

Is the point (0, 8) on the x-axis or y-axis? how do you know?