Sean says that to add a number to -100 and still have -100 is to add zero. Candice says that she can add two numbers to-100 and still have -100. Who is correct and why?
BERE
O Sean is correct because adding any numbers other than zero will result in a different number.
O Candice is correct because if the two numbers total 100, then the sum will be -100.
O They are both correct because adding two numbers that are opposites is equivalent to adding zero.
O Neither is correct because adding any number to -100 will result in a different number,

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.