Find the linearization L(x) of f(x) at x = a.f(x) = 
, a = 0
A. L(x) = 
x
B. L(x) = 
x
C. L(x) = - 
x
D. L(x) = - 
x
Answer: A
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Solve the inequality and graph the solution set.| x | > 7
A. x > 7 ; (7, ?)
B. x > -7 ; (-7, ?)
C. x < -7 or x > 7 ; (-?, -7) ? (7, ?)
D. -7 < x < 7 ; (-7, 7)
Graph the function. Identify the vertex, x-intercepts, and the equation for the axis of symmetry.f(x) = x2 - 1
A. 
vertex: (0, -1)
x-intercepts: none
axis of symmetry: x = 0
B. 
vertex: (-1, 0)
x-intercept: (-1, 0)
axis of symmetry: x = -1
C. 
vertex: (0, -1)
x-intercepts: (-1, 0) and (1, 0)
axis of symmetry: x = 0
D. 
vertex: (0, 1)
x-intercepts: none
axis of symmetry: x = 0
Convert. When necessary, round the answer to two decimal places.240 hours = days
A. 70 B. 80 C. 10 D. 120
Write the nth term of the arithmetic sequence as a function of n. ? a1 = -7, ak + 1 = ak + 4
A. an= -3 + 4n B. an = -7 + 4n C. an = 11 - 7n D. an = -3 + 4n E. an = -11 + 4n