Find the domain of the function.f(x) = x2 + 4

A. {x|x > -4}, or (-4, ?)
B. {x|x ? -4}, or [-4, ?)
C. {x|x ? -4}, or (-?, -4) ? (-4, ?)
D. all real numbers, or (-?, ?)

Answer: D

Mathematics

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Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at x = ?/6 to x = ?/2. The cross sections perpendicular to the x-axis are circular disks with diameters running from the curve  to the curve 

A. ( - 1) ? + 
B.  - 
C.  - 
D. (2 - 2) ? - 

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Mathematics

Use the bar graph, which shows the receipts of the federal government (in billions of dollars) for selected years from 1996 through 2006. In this exercise you are given the expenditures of the federal government. Find the magnitude of the surplus or deficit for the year 2006. (Source: U.S. Office of Management and Budget) ? Year Receipts Expenditures |Receipts - Expenditures| ?2006 ? ?2655.4 ? ?

A. ?

YearReceiptsExpenditures|Receipts - Expenditures|
?2006?2407.3?2655.4?248.1
?
B. ?
YearReceiptsExpenditures|Receipts - Expenditures|
?2006?2407.3?2655.4?102.4
?
C. ?
YearReceiptsExpenditures|Receipts - Expenditures|
?2006?2407.3?2655.4?105.4
?
D. ?
YearReceiptsExpenditures|Receipts - Expenditures|
?2006?2407.3?2655.4?107.4
?
E. ?
YearReceiptsExpenditures|Receipts - Expenditures|
?2006?2407.3?2655.4?107
?

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Mathematics

Find the phase shift of the function.y = 3 sin 

A.  units to the left
B.  units to the left
C.  units to the right
D.  units to the right

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Mathematics

The sequence is defined recursively. Write the first four terms.a1 = w; an = an-1 + R

A. w, w - R, w - 2R, w - 3R B. w, R, 2R, 3R C. w, w + R, w + 2R, w + 3R D. R, R + w, R + 2w, R + 3w

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Mathematics