Intro to calculus

You have 5 courses this semester: two maths courses, introduction to calculus and algebra, an English course, an introduction to computing and finally an introduction to psychology as well.

For the 1st day, you only have 2 classes, the 1st being intro to calc. You arrive a few minutes early, hoping to get a nice seat. As you scan the class, you suddenly see a familiar face sitting near the back of the room.

"Hello Stef, totally forgot we were in the same class", you say as you approach the girl.

"Thankfully I didn't, and I kept a seat for you", she replies.

Steffi is one of your childhood acquaintance. You would not consider yourselves friends yet, since you haven't really hung around together back in your home country. Your parents are friends though, so once you both knew you were going to the same uni, they tried to bring you closer to each other.

You've known her to have a timid and docile nature, so the strappy crop top showing off her bare shoulders and flat tummy and the denim mini short she is wearing surprises you quite a bit.

"Wow, didn't know you wore this kind of outfit", you tell her, impressed.

"Why, does it not fit me?", she replies dryly.

You are a bit taken aback by her response. "Maybe she's just in a bad mood", you dismiss it quickly.

At that moment, a young lady walks in and drops off her bag at the front of the class.

"Hello guys. I'm Elizabeth Hartley, and I'll be your prof for this class."

She looks barely older than you, if you had to guess, around 27 or 28 max. She is wearing a fashionable blazer with matching pants, and the glasses she is wearing completes her smart look.

"Let's not waste any more time and start right away."