Use a graphing calculator to determine the number of real solutions of the quadratic equation 
.
A. one real solution
B. no real solutions
C. two real solutions
Answer: B
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Solve the system of equations by substitution.
A. x = 7, y = 12; (7, 12) B. x = -2, y = 3; (-2, 3) C. x = 3, y = 7; (3, 7) D. x = 12, y = -2; (12, -2)
Add.-13 + 24
A. 11 B. -37 C. 37 D. -11
Solve.While traveling in a car, the centrifugal force a passenger experiences as the car drives in a circle varies jointly as the mass of the passenger and the square of the speed of the car. If the a passenger experiences a force of 28.8 newtons when the car is moving at a speed of 20 kilometers per hour and the passenger has a mass of 80 kilograms, find the force a passenger experiences when the car is moving at 70 kilometers per hour and the passenger has a mass of 90 kilograms.
A. 396.9 newtons B. 352.8 newtons C. 490 newtons D. 441 newtons
The bar graph shows the average temperature in Little City each month for a six month period. 
In which month was the average temperature the second lowest?
A. December B. February C. January D. October