Find the length of the curve.The curve r = a cos2 
, 0 ? ? ? ?, a > 0
A. 
B. 2?a
C. 
D. 2a
Answer: D
Mathematics
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Perform the indicated operation. Simplify the result if possible.34 ft 5 in. - 3 ft 4 in.
A. 37 ft 1 in. B. 31 ft 1 in. C. 31 ft 5 in. D. 30 ft 1 in.
Mathematics
Decide what number must be added to the binomial to make a perfect square trinomial.x2 - 18x
A. 41 B. 162 C. -9 D. 81
Mathematics
Determine a quadratic function that results when applying the given shifts to the graph of 
Shift 11 units down.
A. f(x) = (x - 11)2 B. f(x) = (x + 11)2 C. f(x) = x2 + 11 D. f(x) = x2 - 11
Mathematics
Find the maximum or minimum value of the given objective function of a linear programming problem. The figure illustrates the graph of feasible points. 
Objective Function: z = -x - 5yFind maximum.
A. maximum: -18 B. maximum: -22 C. maximum: -14 D. maximum: -27
Mathematics