Cynthia is a college student on a limited budget. She invests her college fund in safe investments. She invested $6400 in two types of accounts. The first type earned 5% simple interest, and the second type earned
8% simple interest. At the end of the year she had earned $395 in interest. How much did she invest at each
rate?

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.