PLEASE HELP ASAP WILL GIVE BRAINLIES Question 17 (1 point) A group of six friends, which includes a set of twins, lines up for a picture. In how many ways can they be arranged if the twins do not want to stand beside each other?

Question 18 (1 point) In how many ways can the coach of the debating club select a team from six grade- eleven students and eight grade-twelve students if the team has four members, at least two of whom are in grade 12?

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.