The worth of steel is 2.50 this week and it goes up 1.50 every 2 days... after 4 years, what will be the worth of steel?

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0

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?