The formula Upper T equals 26 x squared plus 802 x plus 15 comma 977 models the average cost of tuition and fees, T, at private colleges for the school year ending x years after 2000. The graph to the right shows average cost of tuition and fees at private four-year college.

Simplify the expression 10/11(22z) + (a+5) -1

Which of the following is correct interpretation of the expression -4+13

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