Irections: Solve the following problems. HINT: First, identify the part (pe 1. Sixty-four is two-tenths percent of what number?
2. Three and one-fourth percent of what number is sixty-five?

Which of the following parabolas opens down?

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?

Asix-sided number cube is rolled twice. what is the probability that the first roll is an even numbe and the second roll is a number greater than 4?