Let v2, represent the number of ways of selecting exactly two items when there are n choices on the ballot and write a recurrence relation that expresses the relationship between v2, and v2n-1. can you find more than one way to do this?

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

Consider the graph of the exponential function y=3(2)×

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?