Find all cube roots of the complex number. Leave answers in trigonometric form.125
A. 5 cis 90°, 5 cis 210°, 5 cis 330°
B. 5 cis 0°, 5 cis 60°, 5 cis 120°
C. 5 cis 45°, 5 cis 165°, 5 cis 325°
D. 5 cis 0°, 5 cis 120°, 5 cis 240°
Answer: D
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Find an equation of the line tangent to the given curve at the point (a, f(a)). f(x) = 3e-8x , a = 0
A. y = 8x - 3 B. y = 3x + 3 C. y = -24x + 3 D. y = 24x - 3
Without graphing the function, determine its amplitude or period as requested.y = -5 sin 
xFind the amplitude.
A. 4?
B. 
C. 5
D. 
Solve the problem. Round your answer, if appropriate.As the zoom lens in a camera moves in and out, the size of the rectangular image changes. Assume that the current image is 6 cm × 5 cm. Find the rate at which the area of the image is changing (dA/df) if the length of the image is changing at 0.8 cm/s and the width of the image is changing at 0.1 cm/s.
A. 10.6 cm2/sec B. 9.2 cm2/sec C. 5.3 cm2/sec D. 4.6 cm2/sec
Choose the inequality that best matches the shaded graph.
A. y ? -2x + 2 B. y ? 2x - 2 C. y ? -2x + 2 D. y ? -2x - 2