Determine the domain of the function.f(x) = - 7x + 9
A. x ? 
B. All real numbers except 
C. No solution
D. All real numbers
Answer: D
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Given the area of a rectangle and its specified length or width, use an appropriate formula to find the requested measurement.The area of a rectangular conference room is 3038 ft2, and the length is 62 ft. Find its width.
A. 49 ft B. 51 ft C. 46 ft D. 55 ft
Provide an appropriate response.Solve the following inequality: 
? x + 1 ? 3
Fill in the blank(s) with the appropriate word(s).
A sociologist has found that the number of serious crimes in a certain city each year is described by the function 
where x (in cents/dollar deposited) is the level of reinvestment in the area in conventional mortgages by the city's ten largest banks. Use differentials to estimate the change in the number of crimes if the level of reinvestment changes from 21
src="https://sciemce.com/media/3/ppg__cognero__3.7_Differentials__media__307e533a-5161-4904-9f41-92f1713b8891.PNG" style="vertical-align: middle;" />/dollar deposited to 25
/dollar deposited. Round to the nearest integer.
?
Decrease of __________ crimes/yr.
Fill in the blank(s) with the appropriate word(s).
Solve the problem.A boat heads upstream a distance of 30 miles on the Mississippi river, whose current is running at 5 miles per hour. If the trip back takes an hour less, what was the speed of the boat in still water? Give the answer rounded to two decimal places, if necessary.
A. 18.03 mph B. 15 mph C. 16.58 mph D. 6 mph