Solve the problem.Vince's grocery bill was $9.48. He gave the clerk a $20 bill. How much change should he receive?
A. $10.52
B. $10.51
C. $9.48
D. $9.52
Answer: A
Mathematics
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A company installs 5,000 light bulbs. The lifetimes of the lightbulbs are approximately normally distributed with a mean of 500 hours and a standard deviation of 100 hours. Find the approximate number of bulbs that can be expected to last the indicated amount of time.At least 500 hours
A. 5,000 B. 1,000 C. 2,500 D. 2,400
Mathematics
For the given pair of functions, find the requested function.f(x) = 5x - 2, g(x) = -9x2 - 10x + 7; (f + g)(x)
A. -9x2 - 5x + 5 B. 9x2 - 4x - 9 C. -9x2 + 5x + 5 D. -10x2 - 5x - 5
Mathematics
Divide.(20x8 + 12x4 + 28x2) ÷ 4x2
A. 5x6 + 3x2 + 7 B. 5x8 + 3x4 + 7x2 C. -20x6 + 12x2 - 28 D. 20x6 + 12x2 + 28
Mathematics
Subtract.861 - 208
A. 663 B. 637 C. 653 D. 753
Mathematics