You purchased nine rolls of streamers and eight bags of balloons for 10.50. later you bought two rolls of streamers and four bags of balloons for 4.00. how much does one roll of streamers cost.

Find the equation using the point (4,8)

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

Pls yall i really need the answer fr fr