For the quadratic function, tell whether the graph opens up or down and whether the graph is wider, narrower, or the same shape as the graph of 
f(x) = -x2 - 6
A. Down; same
B. Up; same
C. Up; narrower
D. Down; narrower
Answer: A
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Solve the problem.The curves y = ax2 + b and y = 2x2 + cx have a common tangent line at the point (-1, 0). Find a, b, and c.
A. a = 1, b = 0, c = 2 B. a - 2, b = 1, c = -1 C. a = -1, b = 1, c = -2 D. a = 1, b = -1, c = 2
Provide an appropriate response.A laptop case has an area of 150 in2. If the length is 5 in. more than the width, find the dimensions of the case.
A. width is 5 in.; length is 30 inches B. width is 15 in.; length is 20 inches C. width is 10 in.; length is 15 inches D. width is 6 in.; length is 25 inches
Find the area under the curve over the indicated interval.
Solve the problem.Wind speed varies in the first twenty meters above the ground. For a particular day, let 
compute the wind speed x meters above the ground. At what height is the wind speed 11 meters per second? Round results to the nearest hundredth.
A. 0.97 B. 1.70 C. 0.53 D. 0.59