Solve the given differential equation.y"' - 48y' - 128y = 0
A. y = C1e8x + (C2 + C3x)e-4x
B. y = C1e-4x + (C2 cos 8x + C3 sin 8x)
C. y = C1e8x + C2e-8x + C3e-4x
D. y = C1e-4x + (C2 + C3x)e8x
Answer: A
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Solve the problem.A bacterial culture has an initial population of 10,000. If its population declines to 4000 in 4 hours, when will its population be 2530? Assume that the population decreases according to the exponential model.
A. after 5 hr B. after 7 hr C. after 9 hr D. after 6 hr
Convert the numeral to Hindu-Arabic form.
A. 2662 B. 2502 C. 2742 D. 1066
Solve the formula for the specified variable.P = 2L + 2W for W
A. W = 
B. W = 
C. W = P - L
D. W = P - 2L
Perform the indicated operation by the requested method.496 × 9227; use the Russian peasant method
A. 4,576,602 B. 4,576,582 C. 4,576,592 D. 4,576,692