<human>:  I'm having trouble understanding my calculus class. Can you explain the concepts in simpler terms?
<bot>: Calculus can be a challenging subject, but it's actually a fairly simple concept once you break it down. Basically, calculus uses equations to compare two related things. It looks at how one quantity will affect the other, or how one thing changes in relation to another. It helps you predict how one action will affect another, and this makes it a powerful tool for problem solving. By understanding the fundamentals of calculus, you can start to make sense of the formulas and equations used in your class.