For the given functions f(x) and g(x), find a value x for which (f?g)(x) = (g?f)(x).f(x) = x + 9, g(x) = x2 - 81
A. x = - 4
B. x = 
C. x = - 5
D. x = 5
Answer: A
Mathematics
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Find the first term and the common difference of the arithmetic sequence described. Give a formula for the nth term of the sequence.10th term is 23; 16th term is 25
A. a = 20; d = 
; an = 
n + 
B. a = 14; d = 3; an = 3n + 11
C. a = 20; d = - 
; an = 
n - 
D. a = 20; d = - 
; an = 
n - 20
Mathematics
Solve the formula for the specified variable.A = P(1 + nr) for r
A. r = 
B. r = 
C. r = 
D. r = 
Mathematics
Factor completely. Make sure you factor out the GCF first if possible. If prime, so state.49 - x2
A. (7 - x)2 B. (7 + x)2 C. prime D. (7 - x)(7 + x)
Mathematics
Use interval notation to express the inequality shown in the graph.
A. [-35, ?) B. (-35, ?) C. (-?, -35) D. (-?, -35]
Mathematics