Determine whether the expression is rational.
A. Yes
B. No
Answer: B
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Solve the problem.One dimension of a rectangular solid is represented by 3x units. The volume of the solid is 
cubic units. Express each of the other two dimensions of the rectangular solid in terms of x.
A. (6x - 4) and (2x - 5) B. (2x + 4) and (6x - 5) C. (2x - 4) and (6x - 5) D. Not enough information is given.
Solve the problem.Evaluate 
at (x, y, z) = (2, 5, 5) for the function u(p, q, r) = p2 - q2 - r; p = xy, q = y2, r = xz.
A. 95 B. 25 C. 15 D. 105
Solve the problem.The owner of a video store has determined that the cost C, in dollars, of operating the store is approximately given by 
where x is the number of videos rented daily. Find the lowest cost to the nearest dollar.
A. $262 B. $622 C. $478 D. $406
Simplify the expression, writing the answer as a single term without negative exponents.
A. 1
B. 
C. 
D. xy