Find the derivative of the function at the given value of x.f(x) = x2 + 9x + 9; x = 8
A. 25
B. 9
C. 11
D. 16
Answer: A
Mathematics
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Solve the equation for y.7x + 9y = 7
A. y = 
B. y = 
C. y = -63x + 63
D. y = 
Mathematics
Use interval notation to describe the set of numbers.The cost of a computer is more than $814 and less than $5699.
A. [814, 5699) B. [814, 5699] C. [5699, 814] D. (814, 5699)
Mathematics
Simplify. Express in terms of i.9 + 
A. 9 - 3i B. 12 + i C. 6 D. 9 + 3i
Mathematics
Find the area of the indicated region.
?
Enclosed by 
and 
.
?
A. 
B. 16
C. ?
D. 
E. 4
Mathematics