Find all solutions of the equation in the complex number system.(x + 1)2 = -7
A. {-1 + i
, -1 - i
}
B. {-1 + 
, -1 - 
}
C. {6, 8}
D. {-1 - 
}
Answer: A
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Find the logarithm using the change-of-base formula.log6 0.88
A. -14.0164 B. -0.0555 C. -0.0713 D. 6.8182
Find the standard deviation for the given data. Round your final answer to one more decimal place than that used for the observations.The pH of a patient's blood:7.41, 7.43, 7.36, 7.41, 7.35
A. 0.070 B. 0.032 C. 0.001 D. 0.080
Determine whether the number is abundant or deficient.30
A. Deficient B. Abundant
Solve the problem. Write the answer in lowest terms.A nursery supplier has 
acre of land, and he purchases another 
acre. He wants to plant trees and shrubs, and he has already planted 
acre with shrubs. How much land is left to plant trees?
A. 
acre
B. 
acre
C. 
acre
D. 2
acre