1. A grocery store has 26 shelves for bottled goods. Each shelf can hold 52 bottles. How many bottles will the shelves hold in all? 2. A school's goal is to raise $9,000 to donate to charity. The school has raised $5,435. How much more money does the school need to raise? 3. Alice drove 534 miles on Saturday. On Sunday, she drove 128 more miles than on Saturday. How many miles did Alice drive altogether on Saturday and Sunday?

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.