Solve the problem.If (8, -4) is the endpoint of a line segment, and (12, -5) is its midpoint, find the other endpoint.
A. (16, -6)
B. (6, 4)
C. (16, -3)
D. (0, -2)
Answer: A
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The given triangles are similar. Find the unknown length n. Be sure to include units in the answer.
A. 0.4225 yd B. 10 yd C. 4 yd D. 1 yd
Find the slope of the line described.A line perpendicular to the line x = -4.
A. - 
B. 4
C. 0
D. undefined
Multiply.(-6.16)(-9.39)
A. 578.424 B. 57.8424 C. 0.578424 D. 5.78424
Solve the problem.After introducing an inhibitor into a culture of luminescent bacteria, a scientist monitors the luminosity produced by the culture. Use a graphing utility to fit a logarithmic function to the data. Predict the luminosity after 20 hours.
A. y = 100.5 - 32.7 ln (x), 2.54 B. y = 112.97 - 45.97 ln (x), -24.74 C. y = 98.75 - 32.66 ln (x), 0.91 D. y = 107.55 - 41 ln (x), -15.27