Find a formula for the nth term of the sequence.The sequence 7, -7, 7, -7, 7, . . . (7's with alternating signs)
A. an = 7(-1)n
B. an = 7(-1)2n-1
C. an = 7(-1)2n+1
D. an = 7(-1)n+1
Answer: D
Mathematics
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A. n4 B. n2 C. 1 D. n3
Mathematics
Provide an appropriate response.Find the perimeter and the area of the given figure. Use the formulas P = 2(b + s) and A = bh.
A. 72 in.; 40 in2 B. 40 in.; 72 in2 C. 40 in.; 96 in2 D. 36 in.; 72 in2
Mathematics
Find the exact value of the expression.
A. - 
B. -2
C. - 
D. -
Mathematics
Find the domain of the function.f(x) = ln(5 - x)
A. (-?, 5) B. (-5, ?) C. (5, ?) D. (-?, -5)
Mathematics