Multiply.-5x(-8x2 + 2x - 3)
A. 40x3 - 10x2 + 15
B. 40x2 - 10x + 15
C. 40x3 - 10x2 + 15x
D. 40x3 + 2x - 3
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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Use the given vectors to find the value of the indicated scalar.u = 5i + 3j, v = 8i + 6j, w = -10i - 9j; Find u ? (v + w).
A. -21 B. -77 C. -19 D. 58
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Solve the problem.Five men recorded their average time to run a mile. The results are shown in the bar graph below. Times are in minutes. The fastest average time is how much less time than the slowest average time? 
A. 1.02 min B. 1.49 min C. 0.71 min D. 1.13 min
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Identify the pair of lines as parallel, perpendicular, or intersecting.
A. Parallel B. Intersecting C. Perpendicular
Mathematics