Find all values of x satisfying the given conditions.y1 = x, y2 = 7 + x, y3 = 3(x - 8) + 10x, and the sum of 8 times y1 and 4 times y2 equals y3.
A. {-15}
B. {-52}
C. {15}
D. {52}
Answer: D
Mathematics
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Solve the problem.Write an iterated triple integral in the order 
for the volume of the rectangular solid in the first octant bounded by the planes 
, 
, and 
.
A. 
B. 
C. 
D. 
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Solve the problem. Round to the nearest cent.Find the present value that will generate $8000 in 5 years paying an APR of 4% compounding semiannually.
A. $1437.21 B. $6575.42 C. $9751.96 D. $6562.79
Mathematics
Perform the indicated operations and write the answer in the form 
where a and b are real numbers.(6 + 3i) - (-9 + i)
A. -15 - 2i B. 15 + 2i C. 15 - 2i D. -3 + 4i
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Use substitution to determine whether the given number is a zero of the given polynomial.-1; f(x) = -7x3 + 8x2 + x - 14
A. Yes B. No
Mathematics