Factor the expression completely. If the polynomial is prime, state this as your answer.5k3 + 40
A. 5(k - 2)(k2 + 2k + 4)
B. 5(k + 2)(k2 - 2k + 4)
C. 5(k + 10)(k2 - 10k + 20)
D. 5(k + 2)(k2 + 2k + 4)
Answer: B
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Solve the problem.An electrical component has a lifetime given by the probability density function function 
where x is measured in hours. What is the probability that the component will work for at least 21 hours?
A. 0.811 B. 0.795 C. 0.827 D. 0.787
Solve the problem. Round to two decimal places if needed.Find the area of the sector of a circle of radius 13.2 centimeters formed by a central angle of 
radians.
A. 14.52 square centimeters B. 91.24 square centimeters C. 3.46 square centimeters D. 45.62 square centimeters
Provide an appropriate response.Greg and Andrea want to buy a house, so they have decided to save one fifth of each of their salaries. Greg earns $15.00 per hour and receives an extra $5.00 a week because he declined company benefits, and Andrea earns $14.00 per hour plus benefits. They want to save at least $175.00 each week. How many hours must they each work each week?
Fill in the blank(s) with the appropriate word(s).
Match the graph to the correct inequality.
A. y ? 2x - 2 B. y ? -2x - 2 C. y ? 2x -2 D. y ? -2x - 2