Perform the indicated operations and simplify the result. Leave the answer in factored form.
A. 
B. 
C. 
D. 
Answer: A
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Find the area enclosed by the given curves.y = x, y = x2
A. 
B. 
C. 
D. 
Solve the problem.The minimum length L of a highway sag curve can be computed by L = 
,where ?1 is the downhill grade in degrees (?1 < 0°), ?2 is the uphill grade in degrees (?2 > 0°), S is the safe stopping distance for a given speed limit, h is the height of the headlights, and ? is the alignment of the headlights in degrees. Compute L for a 55-mph speed limit, where 
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and 
Round your answer to the nearest foot.
A. 846 ft
B. 869 ft
C. 824 ft
D. 893 ft
Identify the base used in the computation.
A. Base twelve B. Base nine C. Base ten D. Base eleven
Solve the system.
A. x = -1, y = 3, z = 6, w = 1 B. x = -4, y = -5, z = 10, w = 4 C. x = 4, y = -1, z = 5, w = -4 D. x = 4, y = -2, z = 0, w = 4