Perform the indicated operation. Express the solution in scientific notation.
A. 8 × 10-11
B. 8 × 103
C. 8 × 104
D. 24 × 103
Answer: B
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Write the equation of the axis of symmetry.f(x) = 2x2 - 20x + 53
A. x = 5 B. x = -3 C. x = -5 D. x = 3
Solve.The president of a certain university makes three times as much money as one of the department heads. If the total of their salaries is $220,000, find each worker's salary.
A. president's salary = $110,000; department head's salary = $55,000 B. president's salary = $55,000; department head's salary = $165,000 C. president's salary = $16,500; department head's salary = $5500 D. president's salary = $165,000; department head's salary = $55,000
Give the domain and range for the rational function. Use interval notation.f(x) = 
+ 3
A. Domain: (-?, 0) ? (0, ?); Range: (-?, 3) ? (3, ?) B. Domain: (-?, 2) ? (2, ?); Range: (-?, 3) ? (3, ?) C. Domain: (-?, 3) ? (3, ?); Range: (-?, 0) ? (0, ?) D. Domain: (-?, 0) ? (0, ?); Range: (-?, -3) ? (-3, ?)
Find the standard equation of the parabola that satisfies the given conditions. Vertex: (3, 4); directrix: y = 2
A. (x - 3)2 = -8(y - 4) B. (y - 3)2 = 8(x - 4) C. (x - 4)2 = 8(y - 3) D. (x - 3)2 = 8(y - 4)