Evaluate.6 ? 2-1 + 4 ? 4-1
A. - 4
B. 4
C. -28
D. 28
Answer: B
Mathematics
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Find the indicated partial sum for the given sequence.Find the sum of the first 280 positive integers.
A. 39,340 B. 78,680 C. 39,060 D. 78,400
Mathematics
Solve the equation. Express irrational solutions in exact form and as a decimal rounded to three places.6x2 ? 216 = 362x
A. {-1, 4}
B. {1}
C. 
D. {1, 3}
Mathematics
Write interval notation.{x ? x ? 20.5}
A. (-?, 20.5] B. (-?, 20.5) C. [20.5, ?) D. (20.5, ?)
Mathematics
Solve the equation.3 + 4 ln x = 0
A. 
B. 
C. {e -3/4}
D. 
Mathematics