Find the value of this expression if x = - 7.

x2 - 1

Factor the expression x^2-16x+63

The graph of a certain quadratic function has no x-intercepts. Which of the following are possible values for the discriminant? Check all that apply. A. 25 B. - 18 C. - 4 D. 0

What are the solution (s) to the quadratic equation x^2 - 25 = 0? A - x = 5 and x = - 5 B - x = 25 and x = - 25 C - x = 125 and x = - 125 D - no real solution

Cylinder A has radius 1 m and height 4 m. Cylinder B has radius 2 m and height 4 m. Find the ratio of the volume of cylinder A to the volume of cylinder B. A.) 1:4 B.) 5:6 C.) 1:2 D.) 1:1

4. Kay and Allen sell cell phones. Last month Kay sold 17 more cell phones than Allen. Together they both sold 117 cell phones. How many phones did each of them sell individually? Show the equation you used to determine the answers

What is the momentum of a 79-kilogram ice skater gliding across the ice at a speed of 16 m/s?

There are 52 white keys and 36 black keys on a standard piano. What is the probability that if a person did not look and hit the keyboard twice that he or she would first hit a white key and then hit a black key?

Problem Page A rug is in the shape of a square. It measures 14 feet on each side. What is its perimeter?

Some people advise that in very cold weather, you should keep the gas tank in your car more than half full. Irene 's car had 5.5 gallons in the 14 -gallon tank on the coldest day of the year. Irene filled the tank with gas that cost $3.70 per gallon.

If N = 34, what is 7 - N?