Find the sum.-3 + 1 + 5 + 9 + 13 + ... + (4n - 7)
A. n(4n + 7)
B. n(2n - 5)
C. n(4n - 7)
D. n(2n + 5)
Answer: B
Mathematics
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Find the average value of the function f over the given region.f(x, y) = sin 3(x + y); R = 
A. 
B. 
C. 4?2
D. ?2
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Find the equation of the least-squares regression line. Graph the line and data points on the same graph.
A. y = 2.1 + 0.75x
B. y = 5.1 + 0.75x
C. y = 5.0 + x
D. y = 2.1 + 0.75x
Mathematics
Estimate the difference by rounding the number to the nearest ten.
A. 737 B. 740 C. 730 D. 700
Mathematics