Determine whether the parabola opens upward or downward.y = 3x2 - 2x - 7
A. upward
B. downward
Answer: A
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Solve the problem.The sum of the numbers 12.432, 15.634, 23.523, 30.315, and 18.096 is 100.000. Adjust the list so that the numbers are shown to the hundredths place and their sum is 100.00. The following table shows the numbers truncated to the hundredths place and the discarded portions. 
A. 12.44, 15.64, 23.52, 30.32, 18.09 B. 12.43, 15.65, 23.52, 30.32, 18.09 C. 12.43, 15.64, 23.53, 30.32, 18.10 D. 12.43, 15.63, 23.52, 30.32, 18.10
Multiply. Leave the answer in factored form when appropriate.
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A. 
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D. 
For the functions f(x) and g(x), evaluate the indicated function.Find (f ? g)(2) when f(x) = x - 4 and g(x) = -4x2 + 11x + 5.
A. -22 B. 66 C. -62 D. -66
Find a rectangular equation equivalent to the given pair of parametric equations.x = 5 sin t, y = 5 cos t; 0 ? t ? 2?
A. y2 - x2 = 25; -5 ? x ? 5
B. y =
; -5 ? x ? 5
C. y = x2 - 9; -2 ? x ? 2
D. x2 + y2 = 25; -5 ? x ? 5