Find the focus and directrix of the parabola with the given equation.9y2 = -4x
A. Focus: 
, directrix: y = 
B. Focus: 
, directrix: x = - 
C. Focus: 
, directrix: x = 
D. Focus: 
, directrix: y = 
Answer: C
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Solve the problem.The height of a right circular cone is 5.000 inches longer than its diameter. If the volume of the cone is exactly 40.00 inches3, what is its radius? (The volume of a cone is given by 
.)
A. 2.050 in. B. 2.049 in. C. 2.490 in. D. 2.500 in.
Make the indicated conversion within units of time.Convert 420 seconds to minutes.
A. 13 minutes B. 17 minutes C. 7 minutes D. 3 minutes
Use a calculator to find an approximation to the nearest ten-thousandth.log 103
A. 2.0170 B. 2.0086 C. 2.0128 D. 4.6347
Use the sample space shown in the figure to find the probability of rolling two dice that add to seven.
?
?
A. ?P?(seven) = 
B. ??P?(seven) = 
C. ??P?(seven) = 
D. ??P?(seven) = 
E. ??P?(seven) = 