Solve the equation by extracting the square roots.3x2 = 81
A. x = 3
B. x = 3 or x = -3
C. x = 3
D. x = 3
or x = -3
Answer: D
Mathematics
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Graph the equation and its tangent.Graph y = x2 - 2x - 2 and the tangent to the curve at the point whose x-coordinate is 1.
A. 
B. 
C. 
D. 
Mathematics
The graph of an exponential function is given. Match the graph to one of the following functions. 
A. f(x) = 4x + 1 B. f(x) = 4x - 1 C. f(x) = 4x D. f(x) = 4x - 1
Mathematics
Solve the polynomial inequality and graph the solution set on a number line. Express the solution set in interval notation.x2 - 2x - 3 ? 0
A. (-?, -1]
B. [3, ?)
C. (-?, -1] ? [3, ?)
D. [-1, 3]
Mathematics
Write the first four terms of the sequence.an = 
A. a1 = 1, a2 = 
, a3 = 
, a4 = 
B. a1 = 
, a2 = 
, a3 = 
, a4 = 
C. a1 = 
, a2 = 
, a3 = 
, a4 = 
D. a1 = 
, a2 = 
, a3 = 
, a4 = 
Mathematics