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Watch the following video to help you answer Questions 10 – 14.

Solve the quadratic equation using the quadratic formula. Smallest x-value = [x1] Largest x-value = [x2] Do not use decimals.  Enter integers or reduced fractions.

Watch the following video before answering the question. The height (h) of a ball, in feet, at a given time (t) is represented by the equation where is the initial velocity and is the initial height. Here are Elton’s stats: Elton’s Initial Vertical Velocity: 24 ft/sec Elton’s Release Height: 7 feet To calculate the ball’s height, h, at a given time, t, use the following equation: Calculate the maximum height the ball reaches on its way into the basket. [feet] feet

(This is the same system as Question 4) Solve the following system of equations by graphing using a graphing calculator. What is the solution?  Enter your answer as an ordered pair.

Solve the following system of equations by graphing using a graphing calculator. What is the solution?  If the answer is: One solution: type the ordered pair No solution: type “DNE” Infinitely many solutions: type “infinite solutions”

Watch the following video to help you answer Questions 6 – 9.

Solve the quadratic equation using the quadratic formula. Find where the first mistake occurs: Step 1: Step 2: Step 3: Step 4: Step 5:

You want to solve the following system of equations by graphing using the graphing calculator. Equation 1: Equation 2: What do you need to do to the other equation?

Are and like radicals?  Use complete sentences to explain your answer.

Law Enforcement Police use the formula to estimate the speed of a car s in miles-per-hour (mph), based on the distance d (in feet) of the skid marks when breaking on dry, asphalt road.  At the scene of an accident, a police officer estimated that the speed of the car was 85 mph.  Use this information to determine the distance the skid marks were.  Round your answer to the nearest foot.