The manager of a hardware store is analyzing his monthly profit. In January, the store earned a profit of $4,000. In February, the profit changed by -$450. In
March, the profit changed by +$600 from the previous month. How much profit,
in dollars, did the company make in March?

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

Find solution of the linear equation y = 2/3x + 1/3

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.