Let me know i need asap thank you

Use the elimination method to find the solution to the system of equations. 2x - 3y = -9 -x + 3y = 6

According to the data set, where should the upper quartile line of the box plot be placed?

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true