Marcus ordered art supplies, brushes and paint sets. His order totals $168. The brushes were $8 each and the paint sets were $12
each. The number of paint sets is two less than twice the number of
brushes. Find the number of paint sets and brushes.
What’s the system of equations?

What is the solution to the equation 9^(x+1) =27

Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers. a) one of the 400 passengers is selected uniformly at random. let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem

The scatterplot below shows the number of hours that students read weekly and the number of hours that they spend on chores weekly. which statement about the scatterplot is true?