Find the domain of the function.f(x) = ln(-4 - x)
A. (4, ?)
B. (-?, -4)
C. (-4, ?)
D. (-?, 4)
Answer: B
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Write each whole number in expanded form.6712
A. 2000 + 100 + 70 + 6 B. 6,712,000 C. 6000 + 700 + 10 + 2 D. 600 + 10 + 7
Find the domain and range of the inverse of the given function.f(x) = 
A. Domain: (-?, 0) ? (0, ?); range: (-?, -4) ? (-4, ?) B. Domain and range: all real numbers C. Domain: all real numbers; range: (-?, -4) ? (-4, ?) D. Domain: (-?, -4) ? (-4, ?) ; range: (-?, 0) ? (0, ?)
Use the properties of logarithms to find the exact value of the expression. Do not use a calculator.log5 12 ? log12 125
A. 12 B. 5 C. 3 D. 125
Solve the problem.The speed of a stream is 4 mph. If a boat travels 
downstream in the same time that it takes to travel 
upstream, what is the speed of the boat in still water?
A. 14 mph B. 12 mph C. 8 mph D. 15 mph