Determine whether the given function is one-to-one. If it is one-to-one, find a formula for the inverse.f(x) = 
A. f-1(x) = (x + 4)2
B. f-1(x) = x2 - 4, x ? 0
C. Not one-to-one
D. f-1(x) = 
Answer: B
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Give a verbal representation for the given function. f(x) = 8 - x. Let y = f(x).
A. To obtain y: Subtract 8 from x. B. To obtain y: Subtract x from 8. C. To obtain y: Multiply x by -1, then subtract 8 from the result. D. To obtain y: Multiply 8 by -1, then subtract x from the result.
Provide an appropriate response.If Z has a standard normal distribution, find P(-1 ? Z ? 2).
Fill in the blank(s) with the appropriate word(s).
Provide an appropriate response.Explain why 
and -
represent the same number.
What will be an ideal response?
The graph shows the sales, in thousands of dollars, for a small business over a twelve month period. Use the graph to answer the question. 
What were the sales for Month 9?
A. $48,000 B. $50,000 C. $52,000 D. $46,000