Find the product of (t + 8) and (3t-7)

Askate shop rents roller skates as shown on the table below. which graph and function models this situation?

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?

Find the distance between the pair of points a(-1,8) and b(-8,4)