Simplify, where possible.2a - 6b + 4c - 2(6a + 8b - 7c)
A. -10a - 14b + 11c
B. -10a + 10b - 10c
C. -4a + 2b - 3c
D. -10a - 22b + 18c
Answer: D
Mathematics
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(5 sin x - 1)
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Solve the problem.In a state with a population of 7,000,000 the average citizen spends $6,000 on housing each year. What is the total spent on housing for the state? Express answer in scientific notation.
A. $4.2 × 109 B. $42 × 1011 C. $42 × 1010 D. $4.2 × 1010
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Use a calculator to evaluate the expression. 
A. 10,923,024 B. 5,461,512 C. 131,076,288 D. 655,381,440
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Use inverse functions where needed to find all solutions of the equation in the interval .
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