Solve the problem.Suppose the function y = 4.3t - 4.1 determines the actual time that has elapsed, in minutes, for t minutes of a person's estimate of the elapsed time. Find the actual time that has elapsed for an estimate of 
minutes.
A. 253.9 min
B. 262.1 min
C. 77.63 min
D. 42.37 min
Answer: A
Mathematics
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Use various trigonometric identities to simplify the expression then integrate.
A. - 
cos4 ? + C
B. - 
cos5 ? + C
C. 
cos2 ? + C
D. 
cos3 ? + C
Mathematics
Solve the problem.Find a field G = P(x, y)i + Q(x, y)j in the xy-plane with the property that at any point (a, b) ? (0, 0), G is a unit vector pointing away from the origin.
A. xi + yj
B. 
C. - 
D. 
Mathematics
Find the domain of the logarithmic function.f(x) = log (x2 - 8x + 12)
A. (6, ?) B. (-2, 6) C. (-?, 2) ? (6, ?) D. (-?, -2)
Mathematics
Factor the polynomial completely. If the polynomial cannot be factored, write "prime."x2 + 9
A. (x + 3)2 B. (x - 3)2 C. (x + 3)(x - 3) D. prime
Mathematics