Find the length of the curve.The curve r = a cos2 
, 0 ? ? ? ?, a > 0
A. 2a
B. 
C. 2?a
D. 
Answer: A
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How far does a car travel if the wheel makes 1,900 revolutions, with a wheel radius of 1'? ?
A. ??Approximately 11,940 feet. B. ??Approximately 5,970 feet. C. ??Approximately 6,000 feet. D. ?Approximately ?23,880 feet. E. ?Approximately 2 miles.
Find ?f.f(x, y, z) = x8e4x + y3z4
A. F = (8 + 4x)x7e4xi + (x8e4x + 3y2z4)j + (x8e4x + 4y3z3)k B. F = (1 + x)x7e4xi + y2z4j + y3z3k C. F = (8 + 4x)x7e4xi + 3y2j + 4z3k D. F = (8 + 4x)x7e4xi + 3y2z4j + 4y3z3k
Graph the system of linear inequalities.x - y ? -1x + 2y ? 5y ? 5
A. 
B. 
C. 
D. 
Provide an appropriate response.A line passes through the points (8, 5) and (8, 2). The equation of this line is 
. The slope of the line is 
.
A. y = 8; undefined B. x = 8; undefined C. x = 8; 0 D. y = 8; 0