Evaluate the logarithm without using a calculator.ln e
A. 1
B. -1
C. e
D. 0
Answer: A
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Fill in the blank with one of the words or phrases listed below. 
A 
is a rate with a denominator of 1.
A. proportion B. ratio C. unit price D. unit rate
Write the complex number in trigonometric form, using degree measure for the argument.-3i
A. 3(cos 90° + i sin 90°) B. 3(cos 270° + i sin 270°) C. 3(cos 180° + i sin 180°) D. 3(cos 0° + i sin 0°)
Determine whether the sequence is arithmetic or geometric. Then find the next two terms.17, 0, -17, -34, . . .
A. Arithmetic; -51, -68 B. Geometric; -51, -68 C. Arithmetic; -51, -85 D. Arithmetic; -68, -85
Solve the given differential equation (where the function is subject to the given conditions) by using Laplace transforms.y" - 16y = 20e5t, y
= 5, y' 
= 0
A. y = 
e-4t + 
e5t
B. y = 
e-4t + 
e5t
C. y = 
e4t + 
e-5t
D. y = 
e-4t + 
e-5t