Solve the compound inequality and graph the solution set on a number line. Except for the empty set, express the solution set in interval notation.x < 3 or x < 7
A. (-?, 7)
B. (-?, 3)
C. (3, 7)
D. (-?, 3) ? (7, ?)
Answer: A
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Factor completely.7y2 + 49y + 84
A. 7(y + 4)(y + 3) B. 7(y - 4)(y - 3) C. (y + 4)(7y + 21) D. (7y + 4)(y + 3)
Find the standard deviation for the given data. Round your final answer to one more decimal place than that used for the observations.The fluctuation in power (in W) in a microlamp:59.82, 59.64, 59.80, 60.01, 59.61
A. 0.161 W B. 0.026 W C. 0.259 W D. 0.322 W
Provide an appropriate response.Add 
+ 
and reduce answers to lowest terms with improper fractions changed to whole or mixed numbers.
A. 
B. 
C. 
D. 
Use Heron's formula to find the area of the triangle. Round to the nearest square unit.a = 14 meters, b = 20 meters, c = 10 meters
A. 31 square meters B. 62 square meters C. 124 square meters D. 126 square meters