Suppose the graph of a cubic polynomial function has the same zeroes and passes through the
coordinate (0, -5).
Write the equation of this cubic polynomial
function.
Recall that the zeroes are (2,0), (3, 0), and (5,0).
What is the y-intercept of this graph?

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?