Determine whether there is a maximum or minimum value for the given function, and find that value.f(x) = -x2 + 9x - 5
A. Minimum: -5
B. Minimum: 
C. Maximum: - 
D. Maximum: 
Answer: D
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Find the unit tangent vector of the given curve.r(t) = 4t6i - 3t6j + 12t6k
A. T = 
i - 
j - 
k
B. T = 
i - 
j + 
k
C. T = 
i - 
j + 
k
D. T = 
i + 
j + 
k
Write the percentage as a fraction or decimal, as indicated.Write as a decimal.46%
A. 0.35 B. 4.6 C. 0.046 D. 0.46
Perform the indicated operations on a calculator. Express the result with the proper accuracy and precision. Assume that all numbers are approximate.7.12(13.26)
A. 94.41 B. 94.4112 C. 94.4 D. 90
Solve the problem by writing an appropriate system of equations and using the inverse of the coefficient matrix to solve the system.A $100,000 trust is to be invested in bonds paying 8%, CDs paying 7%, and mortgages paying 10%. The bond and CD investment must be triple the mortgage investment. To earn an $8000 annual income from the investments, how much should the bank invest in bonds?
A. $50,000 B. $30,000 C. $25,000 D. $15,000