Find all specified roots.Fourth roots of -16
A. 2 + i, 2 - i, -2 + i, -2 - i
B. 
+ 
i, 
- 
i, - 
+ 
i, - 
- 
i
C. 8
+ 8
i, 8
- 8
i, -8
+ 8
i, -8
- 8
i
D. 1 + i, 1 - i, -1 + i, -1 - i
Answer: B
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Solve the problem.The number of family practice physicians in a certain country can be approximated by the equation 
where x is the number of years since 2010 and y is the number of physicians in thousands. Write the equation in slope-intercept form and identify the slope and y-intercept. Then, explain the meaning of the slope in this specific equation.
A. y = 
x + 510, m = 
, y-intercept is (0, 510); The slope is the amount of decrease in thousands in the number of family practice physicians in this country per year.
B. y = 
x + 51, m = 
, y-intercept is (0, 51); The slope is the amount of increase in thousands in the number of family practice physicians in this country per year.
C. y = 
x + 510, m = 
, y-intercept is (0, 510); The slope is the amount of increase in thousands in the number of family practice physicians in this country per year.
D. y = 
x + 51, m = 
, y-intercept is (0, 51); The slope is the amount of decrease in thousands in the number of family practice physicians in this country per year.
Determine whether or not the first number is divisible by the second number42,020; 4
A. No B. Yes
Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = 
, y = 0, x = 0, x = 7
A. 196?
B. 
?
C. 14?
D. 
?
For the pair of functions, find the quotient 
(x) and give any x-values that are not in the domain of the quotient function.f(x) = 28x2 + 7x, g(x) = 7x
A. 4x + 1; x ? 0 B. 196x3 + 49x2; x ? 0 C. 4x2; x ? 7 D. 4x + 1; x ? 7