PLS HELP
what would be an appropriate level for the dependent variable on this graph?

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Mason and christian go to the movie theater and purchase refreshments for their friends. mason spends a total of $45.75 on 3 bags of popcorn and 6 drinks. christian spends a total of $71.50 on 6 bags of popcorn and 4 drinks. write a system of equations that can be used to find the price of one bag of popcorn and the price of one drink. using these equations, determine and state the price of a drink, to the nearest cent.

Find the percent error of the measurement 4 cm