Find the domain of the composite function f ? g.f(x) = x + 8; g(x) = 
A. {x 
B. {x 
C. {x 
D. {x 
Answer: B
Mathematics
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A population changes with time. Its level after t years is given by the function 
. After a period of population decrease, the population reaches a minimum value. What can be said about 
at this time?
?
A. is positive.
B. is negative.
C. is zero.
D. is linear.
Mathematics
Convert 4921 cc to liters.
a. 492.1 L b. 49.21 L c. 4.921 L d. 0.4921 L
Mathematics
Find the LCD of the given rational expressions.
; 
A. (y + 2)(y - 4) B. -(y + 2)(y + 4) C. -(y - 2)(y + 4) D. (y - 2)(y + 4)
Mathematics
Find the domain and the range for the function.
A. D: (-?, 5) ? (5, ?), R: (-?, 10) ? (10, ?) B. D: (-?, -5) ? (-5, ?), R: (-?, -10) ? (-10, ?) C. D: (-?, ?), R: (-?, ?) D. D: (-?, 10) ? (10, ?), R: (-?, 5) ? (5, ?)
Mathematics