Solve the problem.Suppose a new business makes a profit of $4000 in its first year, and its profit increases by 18% in each succeeding year. How much total profit did it earn in its first 6 years? Round your answer to the nearest cent.
A. $28,616.84
B. $48,566.09
C. $38,731.81
D. $37,767.87
Answer: D
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Complete the identity.sin x (sin 3x + sin 5x) = ?
A. cos x (cos 3x - cos 5x)
B. cos x (cos 3x + cos 5x)
C. cos x (cos 3x - cos 5x)
D. cos x (cos 3x + cos 5x)
Find the inverse matrix of A.A =
A.
B.
C.
D.
Solve the problem.A zoom lens in a camera makes a rectangular image on the film that is 5 cm × 3 cm. As the lens zooms in and out, the size of the image changes. Find the rate at which the area of the image begins to change (dA/df) if the length of the frame changes at 0.8cm/s and the width of the frame changes at 0.4 cm/s.
A. m2/2
B. 5.2 m2/s
C. 4.4 m2/s
D. 1.4667 m2/s
Find the mean and standard deviation of the specified probability density function.f(x) = 0.3e-0.3x for [0, ?)
A. ? = 3.33, ? = 3.50 B. ? = 3.75, ? = 3.75 C. ? = 33.33, ? = 33.33 D. ? = 3.33, ? = 3.33