The sum of 8 and diane's savings is 56

Which graph represents an even function?

Complete the equation of the line through (−10,3) and (−8,−8). use exact numbers.

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?