Find the average value of the function f over the given region.f(x, y) = 7x + 9y over the region bounded by the coordinate axes and the lines 
and 
.
A. 
B. 52
C. 26
D. 39
Answer: B
Mathematics
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Estimate the sum or difference by first rounding to the nearest ten.81
A. 130 B. 30 C. 40 D. 36
Mathematics
Use a graphing calculator to find the vertex of the graph of the function.f(x) = 4x2 - x + 6
A. (-0.125, 5.9375) B. (0.125, 6.0625) C. (0.125, 5.9375) D. (0.125, 6)
Mathematics
Write using exponents.x ? x ? x ? x
A. 4x B. 4x C. x4 D. x2
Mathematics
Find the center of the ellipse.
+ 
= 1
A. (-3, -4) B. (3, 4) C. (4, 3) D. (-4, -3)
Mathematics