Find the limit algebraically.
A. 2
B. Does not exist
C. -2
D. 0
Answer: B
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Divide. Express the quotient in lowest terms.
÷ 
A. 
B. 
C. 
D. 
Determine whether the graph is that of a function. If it is, use the graph to find its domain and range, the intercepts, if any, and any symmetry with respect to the x-axis, the y-axis, or the origin.
A. function
domain: {x|-1 ? x ? 1}
range: {y|-? ? y ? ?}
intercepts: (-?, 0), (- 
, 0), (- 
, 0), (- 
, 0), (0, 0), (
, 0), (
, 0), (
, 0), (
, 0), (?, 0)
symmetry: none
B. function
domain: all real numbers
range: {y|-1 ? y ? 1}
intercepts: (-?, 0), (- 
, 0), (- 
, 0), (- 
, 0), (0, 0), (
, 0), (
, 0), (
, 0), (
, 0), (?, 0)
symmetry: origin
C. function
domain: {x|-? ? x ? ?}
range: {y|-1 ? y ? 1}
intercepts: (-?, 0), (- 
, 0), (- 
, 0), (- 
, 0), (0, 0), (
, 0), (
, 0), (
, 0), (
, 0), (?, 0)
symmetry: origin
D. not a function
Solve the problem.The diagram below shows a rope connecting the top of a pole to the ground. The rope is 21 yd long and touches the ground 17 yd from the pole. How tall is the pole? Round your answer to the nearest thousandth if necessary. 
17 yd
A. 12.329 yd B. 6.165 yd C. 19 yd D. 76 yd
Perform the indicated operation and simplify. Write the answer in the form a + bi.
A. 
+ 
i
B. - 
- 
i
C. 
- 
i
D. - 
+ 
i