8. A square has one dimension increased by 4 feet and another dimension decreased by 2 feet. If the resulting rectangle has an area of 72 square feet, which of the following equations could be used to solve for the square's
original side length, x?
(1) r? + 2x - 72 = 0
(3) r? - 8x+64 = 0
(2) r?+2.x - 80 =0
(4) x² - 6x +32 = 0

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