Provide an appropriate response.In your own words, explain how you would solve a word problem using proportions.
What will be an ideal response?
Let x stand for the unknown amount. Use the information in the problem to make two ratios. The first ratio is given in the statement of the problem. Write it in fraction form with appropriate units. Write the second ratio so both numerators have the same unit name and both denominators do too. Make a proportion by setting the ratio equal. Solve for x.
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Find the domain of the rational function.f(x) = 
A. (-?, ?) B. (-?, - 3) ? (- 3, 3) ? (3, ?) C. (-?, -6) ? (-6, ?) D. (-?, 6) ? (6, ?)
Find the domain of f(x).f(x) = ?41 - x?
A. {x? x is a real number and x ? 41} B. {x? x < 41} C. {x? x is a real number and x ? -41} D. ? the set of all real numbers
Estimate by rounding the addends to the nearest ten:
?
?
A. 420 B. 430 C. 410 D. 440
Solve the problem.In September 1998 the population of the country of West Goma in millions was modeled by 
At the same time the population of East Goma in millions was modeled by 
In both formulas x is the year, where 
corresponds to September 1998. Assuming these trends continue, estimate the year when the population of West Goma will equal the population of East Goma.
A. 2008 B. 2011 C. 2009 D. 1987