Which of the following are situations that can be modeled with a quadratic function? select all that apply. 1)a tree decays 10% every six weeks 2)the height of a ball rolling down a hill 3)a gym charges $15 per fitness class 4)an antibiotic eliminates 50% of bacteria every 24 hours 5)the height of a rocket after it is launched

Which rational number could be graphed between -4 and -5

Aflagpole broke in a storm. 77 7 meters are still sticking straight out of the ground, where it snapped, but the remaining piece has hinged over and touches the ground at a point 2424 24 meters away horizontally

Two researchers are attempting to create a new psychotherapy protocol that more reduces panic attacks. they believe that they have succeeded and are now in the clinical trial period of their protocol's development. they are working with several cohort groups, some of which have been through the new protocol, while others have done the standard protocol currently recommended. if these researchers are interested in evaluating the difference in the percentage of test subjects who successfully decreased their panic attacks in 2 months on the new protocol versus the percentage of test subjects who successfully decreased their panic attacks in 2 months with the traditional protocol, which of the following statistical tests would be most appropriate? a. analysis of variance (anova) b. correlation c. chi-square test d. paired t-test e. independent t-test