Solve the system.x - z = 1y + z = 9x + z = 5
A. {(1, 9, 0)}
B. 
C. {(6, 14, 4)}
D. 
Answer: D
Mathematics
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If r(t) = 7i+tcos?tj+4 sin ?tk, evaluate  Figure 3.png)
What will be an ideal response?
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Solve the problem.A $166,000 trust is to be invested in bonds paying 7%, CDs paying 5%, and mortgages paying 9%. The bond and CD investment must equal the mortgage investment. To earn an $12,480 annual income from the investments, how much should the bank invest in bonds?
A. $43,000 B. $40,000 C. $41,000 D. $83,000
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Determine whether the given function is even, odd, or neither even nor odd.
A. Even B. Neither C. Odd
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Write sigma notation.4 + 8 + 16 + 32 + 64
A. 
B. 
C. 
D. 
Mathematics