For the pair of functions, perform the indicated operation.f(x) = 
, g(x) = 
Find f ? g.
A. (2x + 5)(25x - 9)
B. (
)(
)
C. (2x + 5)(5x - 3)
D. (5x - 3)(
)
Answer: B
Mathematics
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Use the given row transformation to change the matrix as indicated.
; 7 times row 1 added to row 2
A. 
B. 
C. 
D. 
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Use the summation properties and rules to evaluate the series. The following rules may be needed: 
.
A. - 880 B. - 2640 C. - 220 D. - 20
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Find values of x and y such that both fx(x, y) = 0 and fy(x, y) = 0.f(x,y) = x3 + y3 - 9xy
A. x = 3, y = 3 B. x = 1, y = 1 C. x = -3, y = -3 D. x = 0, y = 0
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Solve the problem.Suppose that the population of a certain type of insect in a region near the equator is given by 
where t represents the time in days. Find the rate of change of the population when 
A. 1.8 insects B. 3.7 insects C. 1.0 insects D. 0.8 insects
Mathematics