Find the equation of the parabola whose vertex and focus are shown.
A. (x + 1)2 = 4(y - 3)
B. (y + 1)2 = 4(x - 3)
C. (y + 1)2 = -12(x - 3)
D. (x + 1)2 = -12(y - 3)
Answer: D
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Solve the right triangle. Round results to an appropriate number of significant digits.B = 23.6°, c = 4.3 mm
A. a = 1.7 mm, A = 66.4°, b = 3.9 mm B. a = 3.1 mm, A = 66.4°, b = 3.0 mm C. a = 3.9 mm, A = 66.4°, b = 1.7 mm D. a = 3.9 mm, A = 66.4°, b = 3.1 mm
Use the quadratic formula to solve the equation.
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Simplify your answer as much as possible. Please enter your answer as two numbers, separated by a comma.
What will be an ideal response?
The table shows, for some particular year, a listing of several income levels and, for each level, the proportion of the population in the level and the probability that a person in that level bought a new car during the year. Given that one of the people who bought a new car during that year is randomly selected, find the probability that that person was in the indicated income category. Round your answer to the nearest hundredth. 
$50,000 and over
A. .24 B. .28 C. .22 D. .25
Combine the numbers.5.8 - (- 2.9) + 2.6
A. 6.1 B. 5.5 C. -0.3 D. 11.3