Write a formula for the general term, or nth term, for the given sequence.1 ? 5, 2 ? 6, 3 ? 7, 4 ? 8, 5 ? 9, . . .
A. an = n(n - 4)
B. an = n(n + 4)
C. an = n(n + 5)
D. an = n + 4n
Answer: B
Mathematics
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Multiply.(-2x2 + 4y)(5x2 + 5y)
A. -10x4 + 10x2y2 + 20y2 B. -10x4 + 10x2y + 20y2 C. -10x4 + 10x2y + 20y4 D. -10x2 + 10xy + 20y2
Mathematics
Find the exact value of the expression.tan-1 (-1)
A. 
B. 
C. - 
D. 
Mathematics
Sketch the graphs of the functions f and g and find the area of the region enclosed by these graphs and the vertical lines 
and 
.
?
?
A. ?
sq units.
?
B. ?
sq units.
?
C. ?
sq units.
?
D. ?
sq units.
?
Mathematics
Provide an appropriate response.Let A = 
, where b and d are nonzero constants. Find A-1.
A. 
B. 
C. 
D. 
Mathematics