Solve by factoring completely. If three identical squares have a total area of 27x2 + 18x + 3, find the length of one side of one of the squares.
A. 3x + 1
B. 2(3x + 1)
C. (3x + 3)2
D. 3x - 1
Answer: A
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Solve the differential equation.y' + y = y2
A. 1 - Ce-x
B. 1 + Cex
C. 
D. 
Solve the problem.A cheetah can run at a speed of approximately 68 miles per hour. Calculate this speed in feet per minute.
A. 5954 ft./min. B. 5984 ft./min. C. 6009 ft./min. D. 2040 ft./min.
Solve the compound inequality.9x - 6 < 3x or -3x ? -9
A. No solution B. 1 < x ? 3 C. 1 ? x ? 3 D. x < 1 or x ? 3
Solve the problem.The cost of a computer system increases with increased processor speeds. The cost C of a system as a function of processor speed is estimated as C(s) = 12s2 - 9s + 1900, where s is the processor speed in MHz. Determine the intervals where the cost function C(s) is decreasing.
A. Nowhere B. (0.4, ?) C. (-?, 0.4) D. Everywhere