Solve the problem.If 
f(x) = L, which of the following expressions are true? I. 
f(x) does not exist. II. 
f(x) does not exist. III. 
f(x) = L IV. 
f(x) = L
A. II and III only
B. I and II only
C. III and IV only
D. I and IV only
Answer: C
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Add or subtract as indicated. Simplify if necessary.
+ 
A. 
B. 
C. 
D. 
Identify the number as prime, composite, or neither.0
A. Neither B. Composite C. Prime
Use the REGRESSION feature on a graphing calculator.A study was conducted to compare the average time spent in the lab each week versus course grade for computer students. The results are recorded in the table below. 
Use linear regression to find a linear function that predicts a student's course grade as a function of the number of hours spent in lab.
A. y = 44.3 + 0.930x B. y = 88.6 - 1.86x C. y = 1.86 + 88.6x D. y = 0.930 + 44.3x
Find 
.f(x) = 12 - 9x3
A. -9(x2 - xh - h2) B. -9(3x2 + 3xh + h2) C. -3x2 D. -9(3x2 - 3x - h)