Find the average value of the function f over the given region.f(x, y) = 
; R = {(x, y): 1 ? x ? 4, 1 ? y ? 4}
A. 
2
B. 
2
C. 
D. 
Answer: B
Mathematics
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Determine if matrix A is invertible.A = 
A. Invertible B. Not invertible
Mathematics
Perform the indicated row operations on the following matrix. 
(-2)R1 + R2 ? R2
A. 
B. 
C. 
D. 
Mathematics
Use the substitution method or the elimination method to solve the system. If the system has infinitely many solutions, express the ordered pair in terms of x or y.
x + 
y = 4
x + 
y = 2
A. no solution
B. (0, 12)
C. 
D. 
or 
Mathematics
Find the vertical asymptote(s), if any, of the graph of the rational function. g(x) = 
A. x = 5 B. y = 5 C. x = -5 D. x = -7
Mathematics