Solve the equation by making an appropriate substitution.x4 - 4x2 + 3 = 0
A. {1, 3}
B. {-1, 1, -i
, i
}
C. {1, 
}
D. {-1, 1, -
, 
}
Answer: D
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Solve the problem.The number of books in a small library increases according to the function B = 7200e0.02t, where t is measured in years. How many books will the library have after 5 years?
A. 7200 B. 9064 C. 7957 D. 16,579
Solve.Let f(x) = 8x + 6 and g(x) = 7x2 + 5. Find f(7) + g(7) .
A. 410 B. 404 C. 405 D. 399
Study the information given below. If a valid conclusion is given, select that conclusion.
All beachcombers are swimmers. All swimmers wear swimsuits. John is wearing a swimsuit. a. Therefore John cannot swim. b. Therefore John is a beachcomber. c. Therefore John can swim. d. no valid conclusion given
The scores on a test form a normal distribution with a mean of 78 and a standard deviation of 6. A test is selected at random. Find the probability the score is above 87.
What will be an ideal response?