Find the domain of the function.f(x) = 5 - 
A. all real numbers, or(-?, ?)
B. {x|x < 4}, or (-?, 4)
C. {x|x > 5}, or (5, ?)
D. {x|x ? 0}, or (-?, 0) ? (0, ?)
Answer: D
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Find the equation of a circle satisfying the given conditions.Center: (0, -10); radius: 6
A. x2 + (y - 10)2 = 6 B. (x - 10)2 + y2 = 36 C. x2 + (y + 10)2 = 36 D. (x + 10)2 + y2 = 36
Solve the problem.The time t in years for an amount increasing at a rate r (in decimal form) to double is given by 
This is called "doubling time." How long will it take for prices in the economy to double at a 7% annual inflation rate? Round to the nearest year.
A. 9 yr B. 23 yr C. 10 yr D. 16 yr
A manufacturer of doors, windows, and cabinets writes her yearly profit (in thousands of dollars) for each category in a vector as: 
Her fixed costs of production can be described by the vector: 
What would her income be if increasing it threefold would cause her profit to be five times as large? (Round to the nearest thousand dollars.)
What will be an ideal response?
Insert either < or > in the blank between the pair of whole numbers to make a true statement.0 
29
A. < B. >