(EASY) The amount of propane in a tank that stores propane for heating a home decrease from 500 gallons to 344 gallons. 1. Use a graph or the slope formula to show the average rate of change in the amount of propane used over the 45-day period.

Asegment in the complex plane has a midpoint at 7 – 2i. if the segment has an endpoint at 11 – 3i, what is the other endpoint?

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?

Find the solution on the interval [0, 2pi)