Choose the function represented by the data. Of(x) = -14x - 11
O f(x) = -12x + 1
O f(x) = 2x2 + 1
Of(x) = x2 - 6x + 1

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?