Give a rule for the piecewise-defined function. Then give the domain and range.
A. f(x) = 
; Domain: (-?, ?), Range: (-?, 3] ? [3, ?)
B. f(x) = 
; Domain: (-?, 3] ? [3, ?), Range: (-?, ?)
C. f(x) = 
; Domain: (-?, 3) ? (3, ?), Range: (-?, ?)
D. f(x) = 
; Domain: (-?, ?), Range: (-?, 3) ? (3, ?)
Answer: D
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Multiply mentally.
?
?
A. 
B. 
C. 
D. 
E. 
Evaluate the integral. 
A. 
- 2 ln
+ C
B. -2sin-1
- x2
+ C
C. 4 sin-1
- 
+ C
D. 4 sin-1
- x
+ C
The pictograph shows the number of bicyclists who participated in the Labor Day weekend bicycle race for the years indicated. 
How many cyclists participated in 2007?
A. 90 cyclists B. 120 cyclists C. 65 cyclists D. 100 cyclists
Solve. Assume the exercise describes a linear relationship.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 783. Find a linear equation which fits this data, and which relates score to review time. Use this equation to predict an average score for persons taking a 48-hour review course. Round your answer to the nearest tenth.
A. 686.1 B. 697.6 C. 707.4 D. 693.4