Y = -5/3 +3 and Y = 1/3x -3

Julia chooses a card at random from her set of cards. what is the probability that the card is labeled cat or hamster?

Asquare parking lot has 6,400 square meters what is the length in meters

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?