State a reason why a number does not belong with the others.
32 64
81 144

What is the solution of log2  (3x  -  7)  =  3? 4 5

Find the distance between (0,5) & (-4,2)

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?