Solve using the elimination method. x - 5y = 20 9x - 4y = 16
A. (20, 16)
B. (1, -5)
C. (4, 0)
D. (0, -4)
Answer: D
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Find the area.Express the answer in square millimeters. 
A. 60 mm2 B. 120 mm2 C. 1275 mm2 D. 40 mm2
Find a parametrization for the line segment joining the points.(5, 0, 5), (0, -5, 0)
A. x = -4t, y = 6t - 5, z = -4t, 0 ? t ? 1 B. x = -4t + 5, y = 6t, z = -4t + 5, 0 ? t ? 1 C. x = 5t, y = 5t - 5, z = 5t, 0 ? t ? 1 D. x = -5t + 5, y = -5t, z = -5t + 5, 0 ? t ? 1
Provide an appropriate response. Put the polynomial in descending order: 5x2 - x + 3x4
A. -x + 3x4 + 5x2 B. 3x4 + 5x2 - x C. 3x4 - 5x2 + x D. 5x2 + 3x4 - x
Provide an appropriate response.The number of loaves of whole wheat bread left on the shelf of a local quick stop at closing (denoted by the random variable X) varies from day to day. Past records show that the probability distribution of X is as shown in the following table. Find the probability that there will be at least three loaves left over at the end of any given day. 
A. 0.20 B. 0.65 C. 0.35 D. 0.15