A parabola has a y-intercept of 5 and contains the points (2,-3) and (-1, 12). What are the coordinates of the vertex?
Use any method you like but you must show ALL of your work and justify your answer.

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

Given ab and cb are tangents of p, and m =10°. what is the measure of abp?

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?