Graph the function f(x) over the given interval. Partition the interval into 4 subintervals of equal length. Then add to your sketch the rectangles associated with the Riemann sum 
, using the indicated point in the kth subinterval for ck.f(x) = cos x + 1, [0, 2?], left-hand endpoint
A. 
B. 
C. 
D. 
Answer: B
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Convert.2,700,000 cm = _____ km
A. 27 B. 270 C. 2.7 D. 0.27
Write the quadratic equation in standard form. Determine the values of a, b, and c.1 - 5x + 3x2 = 0
A. 3x2 - 5x + 1 = 0 a = -3, b = 5, c = -1 B. 0 = -3x2 + 5x - 1 a = 3, b = -5, c = 1 C. 3x2 - 5x + 1 = 0 a = 3, b = -5, c = 1 D. 0 = -3x2 - 5x - 1 a = -3, b = 5, c = -1
Solve the problem.The voltage E in an electrical circuit is given by E = 1.2 cos 80?t, where t is time measured in seconds. Find the amplitude.
A. 1.2 B. 80? C. 2.4 D. 80
Solve using the simplex method.Find x1 ? 0 and x2 ? 0 such that x1 + x2 ? 25 x1 + 2x2 ? 15 2x1 + x2 ? 30and z = 4x1 + 2x2 is maximized.
A. x1 = 15, x2 = 0, z = 60 B. x2 = 30, x1 = 0, z = 60 C. x1 = 25, x2 = 0, z = 100 D. x1 = 15, x2 = 10, z = 80