Simplify the radical expression. Assume that all variables represent positive real numbers.
A. 5 
B. 
C. 5
D. 5 
Answer: D
Mathematics
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Use the distributive property to rewrite the expression.13(23 + 11)
A. 13 + 23 + 11 B. 13 ? 23 + 13 ? 11 C. 13 ? 23 + 11 D. 13 ? 34
Mathematics
Write the equation for the plane.The plane through the points P(5, -8, 40) , Q(-3, -6, 58) and R(-1, 6, -34).
A. 7x + y + 4z = -4 B. 7x + y + 4z = 4 C. 4x + 7y + z = 4 D. 4x + 7y + z = -4
Mathematics
Solve the problem.The sales of a mature product (one which has passed its peak) are given by the function 
where t is time in years. Find the sales after 12 years if 
and 
A. 17,400 B. 19,816 C. 9908 D. 82,804
Mathematics
Perform the indicated operations.( 7x2y - 2xy2 + 2xy - 5) + ( -3x2y - 8xy2 + 5xy + 8)
A. 5x2y2 - 13 B. 4x2y - 10xy2 + 7xy + 3 C. 10x2y - 9xy2 + 8xy + 13 D. -4x2y + 10xy2 + 7xy + 3
Mathematics