Determine if the graph of the function is concave up or concave down.f(x) = -3x2 - 3x - 9
A. Concave up
B. Concave down
Answer: B
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Solve the problem.The velocity v in feet per second of a free-falling object can be found using the formula 
, where d is the distance (in feet) that the object has already fallen. Find the distance that and object with a velocity of 68 ft/s has fallen. Round to the nearest foot.
A. 63 feet B. 66 feet C. 72 feet D. 74 feet
Use the table to determine the probability. Round your answer to three decimal places if necessary.In a recent year, the percentage of computer games sold is summarized in the following table:Game Type
What is the probability that a computer game sold was a family or role playing game?
A. 0.193 B. 0.084 C. 0.723 D. 0.277
Solve by factoring completely. If three identical cubes have a total volume of 3x3 + 27x2 + 81x + 81, find the length of one of the sides of one of the cubes.
A. x + 3 B. (x + 3)2 C. x - 3 D. 3(x + 3)
Solve the problem.The length of a rectangle is 5 inches more than the width. The perimeter of the rectangle is 114 inches. Find the width of the rectangle.
A. 27 in. B. 28 in. C. 26 in. D. 31 in.