Simplify the radical expression. Assume that all variables represent positive real numbers.
A. 27
B. 3
C. 9
D. not a real number
Answer: B
Mathematics
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Determine the limit by sketching an appropriate graph.
f(x), where f(x) = 
A. 13 B. 0 C. 16 D. 19
Mathematics
Simplify, if possible. If the answer is undefined, state so.
A. 125 B. -24 C. 0 D. Undefined
Mathematics
Find the quotient. Write the answer in standard form.
A. 7 B. 7i C. -7 D. -7i
Mathematics
Solve the system by using Gaussian elimination with backward substitution or by reducing the matrix to reduced-row echelon form. 6x + 7y = 24-2x - 5y = -8
A. (3, 1) B. No solution C. (4, 1) D. (4, 0)
Mathematics