Find the expected value.Experience shows that a ski lodge will be full (162 guests) if there is a heavy snow fall in December, while only partially full (80 guests) with a light snow fall. What is the expected number of guests if the probability for a heavy snow fall is .40? Assume that heavy snowfall and light snowfall are the only two possibilities.
A. 97.2
B. 129.2
C. 64.8
D. 112.8
Answer: D
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Use scientific notation to solve the problem.The earth is approximately 92,900,000 miles from the sun. 
x 103 m, what is the distance to the sun in meters?
A. 5.7 x 10-10 m B. 5.7 x 1010 m C. 1.50 x 1011 m D. 1.50 x 1010 m
Solve the problem.Which is greater, E or P, and by how much? E = 1 + 3 + 5 + 7 + . . . + 95 P = 2 + 4 + 6 + 8 + . . . + 96
A. E is greater by 47 B. P is greater by 48 C. P is greater by 49 D. E is greater by 48
Find the length of the unknown side of the right triangle. In each case, a and b represent the lengths of the legs and c represents the length of the hypotenuse.
b = 9, c = 15; find a
A. 14 B. 12 C. 15 D. 11
Solve the problem.Determine whether the lines containing the given pairs of points are parallel, perpendicular, or neither.L1: (7, -3) and (1, 5) L2: (7, 7) and (1, 7)
A. Parallel B. Perpendicular C. Neither