Find all cube roots of the complex number. Leave answers in trigonometric form.4 - 4i
A. 
cis 100°, 
cis 220°, 
cis 340°
B. 
cis 60°, 
cis 180°, 
cis 300°
C. 
cis 80°, 
cis 200°, 
cis 320°
D. 
cis 100°, 
cis 220°, 
cis 340°
Answer: D
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Solve the problem.The surface area of a hollow cylinder (tube) is given by 
where h is the length of the cylinder and R1 and R2 are the outer and inner radii. If h, R1, and R2 are measured to be 9 inches, 3 inches, and 7 inches respectively, and if these measurements are accurate to within 0.1 inches, estimate the maximum possible error in computing S.
A. 12.57 B. 11.94 C. 17.59 D. 13.82
Write the interval as an inequality involving x, and illustrate the inequality using the real number line.[-4, 9]
A. -4 < x ? 9
B. -4 ? x < 9
C. -4 < x < 9
D. -4 ? x ? 9
Use the quadratic formula to solve the equation.x2 - 28x + 196 = 0
A. {-14, 14} B. {-14} C. {14} D. {-14 - i, -14 + i}
The lengths of the sides of a triangle are given. Determine if the triangle is a right triangle. If it is, identify the hypotenuse.14, 48, 50
A. right triangle; 14 B. right triangle; 48 C. right triangle; 50 D. not a right triangle