Hasan plans to choose a book from a section of the store where everything is 25%25% off. He writes the expression d−0.25dd-0.25d to find the sale price of the book if the original price is dd dollars. Bella correctly writes another expression, 0.75d0.75d, that will also find the sale price of the book if the original price is dd dollars. Use the drop-down menus to explain what each part of Hasan's and Bella's expressions mean.

2-3 6. use your equation to find how high tyler will have to climb to scale the peak. (4 points: 2 points for correctly substituting values, 2 points for the correct height)

Which ratios are equivalent to 10: 16? check all that apply. 30 to 48 25: 35 8: 32 5 to 15

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