You are studying for your final exam of the semester. up to this point, you received 3 exam scores of 84%, 65%, and 90%. to receive a grade b in the class, you must have an average exam score between 80% and 89% for all 4 exams including the final. find the widest range of scores that you can get on the final exam in order to receive a grade of b for the class. use interval notation. a- (75,100) b-(81,100) c-(84,97)

Astudent is determining the influence of different types of food on the growth rate of spiders. she feeds one group of spiders two caterpillars twice a week. the other group received similarly-sized beetles twice a week. she records the amount of time required for individuals to reach sexual maturity. her hypothesis is that the spiders feeding on caterpillars will have a faster growth rate because caterpillars have a higher protein content compared to beetles. in this experiment, what is the dependent variable? spiders assigned to different feeding groups. time required to reach sexual maturity number of prey items fed twice a week. growth rates of each group.