📘 optimization, calculus

1. **State the problem:** We want to maximize the monthly profit given a total advertising budget of 20000 dollars, where $x$ is the amount spent on newspapers and $y$ on televisio

1. **Problem Statement:** A man is on an island 1 km from the shore. The shore is a straight horizontal line, and the island is 1 km perpendicular above the shore. The ranger's off