Consider the equation 
. Select the correct graph of the equation for 
.
?
A. ?
B. ?
C. ?
?
D. ?
E. ?
Answer: C
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Find the domain and range of the inverse of the given function.f(x) = 
x - 8
A. Domain and range: all real numbers B. Domain: (-?, 8) ? (8, ?); range: (-?, 3) ? (3, ?) C. Domain: (-?, 3) ? (3, ?); range: all real numbers D. Domain and range: (-?, 3) ? (3, ?)
Find the surface area of the surface S.S is the paraboloid x2 + y2 - z = 0 between the planes z = 
and z = 6.
A. 
?
B. 
?
C. 
?
D. 
?
Solve the problem.In recent years, many states have passed laws against smoking in public buildings. The total number of states N that have passed a no smoking in public buildings law, t years after 1990 is given by the function, N(t) = 
. How many states had passed the law in 1990?
A. 0 B. 0.313 C. 1.563 D. 3.125
?Determine the open intervals on which the graph of 
is concave downward or concave upward.
?
A. ?concave downward on 
B. ?concave downward on 
; concave upward on 
C. ?concave upward on 
; concave downward on 
D. ??concave downward on 
; ?concave upward on 
E. ?concave upward on 
; concave downward on 