Solve the equation using the quadratic formula.4x2 + 12x = - 2
A. x = 
B. x = 
C. x = 
D. x = 
Answer: A
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
What integer is represented by the curved arrow on the number-line diagram?
A. 9 B. -9 C. -8 D. 8
Mathematics
Simplify. Assume that any variables are positive.
A. 
B. 
C. 
D. 
Mathematics
Find an equation of the circle satisfying the given conditions.Center: (-1, 0); passes through the point (-1, -3)
A. (x + 1)2 + y2 = 9 B. (x + 1)2 + y2 = 3 C. (x - 1)2 + y2 = 9 D. x2 + (y + 1)2 = 9
Mathematics