Solve.5x + 2y + z = -112x - 3y - z = 177x + y + 2z = -4
A. (0, 6, -1)
B. (-3, 0, 4)
C. (3, 0, -4)
D. (0, -6, 1)
Answer: D
Mathematics
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Divide and simplify.
A. 4x + 7
B. 4x + 7 + 
C. 9x + 7
D. 4x + 35x3 + 
Mathematics
Translate to an equation and solve. 74 is 40% of what?
A. 18.5 B. 29.6 C. 1850 D. 185
Mathematics
Solve the problem.The function E(x) = 0.0048x3 + 0.0047x2 + 0.106x + 1.26 gives the approximate total earnings of a company, in millions of dollars, where
corresponds to 1996, 
corresponds to 1997, and so on. This model is valid for the years from 1996 to 2000. Determine the earnings for 1999. Round to the nearest hundredth when necessary.
A. $1.67 million B. $1.75 million C. $2.07 million D. $1.53 million
Mathematics
Determine whether the sequence is geometric.an = -60(0.5)-n
A. Geometric B. Not geometric
Mathematics