- Three athletic clubs offer different membership costs. The first club charges $20 per month. The second club charges $20 per month plus an application fee of
$10. The third club charges $20 per month and offers a $15.00 reduction in the
first month's membership fees. Write the equations that model the total cost of
membership at the three clubs. Describe how the second and third graphs are
related to the graph of the first club.

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.