Find the square root if it is a real number, or state that the expression is not a real number.
A. 5
B. -5
C. -25
D. not a real number
Answer: D
Mathematics
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Express the number in decimal notation.8.1 × 105
A. 81,000 B. 8,100,000 C. 405 D. 810,000
Mathematics
Add. Do not use a number line except as a check.-2.6 + (-7.3)
A. 9.9 B. -9.9 C. -4.7 D. 4.7
Mathematics
Find all x-intercepts.f(x) = x3 + x2 - 12x
A. (0, 0), (- 4, 0), (3, 0) B. (2, 0), (3, 0) C. (0, 0), (2, 0), (3, 0) D. (- 4, 0), (3, 0)
Mathematics
Express as a single logarithm and, if possible, simplify.ln 12 - ln 2
A. ln 
B. ln(10)
C. ln(6)
D. ln 
Mathematics