The graph of an exponential function is given. Select the function for the graph from the functions listed.
A. f(x) = 5-x
B. f(x) = 5x
C. f(x) = - 5-x
D. f(x) = - 5x
Answer: C
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Find the moment or center of mass of the wire, as indicated.Find the center of mass of a wire that lies along the semicircle y = 
if the density of the wire is 
.
A. 
= 0, 
= 2
B. 
= 0, 
= 3
C. 
= 3, 
= 3
D. 
= 2, 
= 2
Decide whether the given replacement value is a solution of the given equation.Is - 
a solution to 8x = - 
?
A. Yes B. No
Solve the compound inequality and graph the solution set on a number line. Except for the empty set, express the solution set in interval notation.10 < 5x ? 30
A. (-?, 2] ? (6, ?)
B. (-?, 2) ? [6, ?)
C. [2, 6)
D. (2, 6]
Find all specified roots.Seventh roots of 1.
A. 1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
B. -1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
C. 1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
D. 1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
, -1