Use the matrix capabilities of a graphing utility to find AB, if possible.
A. 
B. 
C. 
D. 
E. not possible
Answer: D
Mathematics
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Use the graph to evaluate the limit.
f(x)
A. 0 B. does not exist C. -1 D. 6
Mathematics
Write an equation to describe the variation. Use k for the constant of proportionality.x varies jointly as the square of y and the square of z.
A. xy2z2 = k B. x = ky2z2 C. x = k + y2 + z2 D. x + y2 + z2 = k
Mathematics
Solve and check.9x = 72
A. x = 63 B. x = 8 C. x = -8 D. x = 648
Mathematics
Find the domain of the radical function. Write it in interval notation.f(x) = 
A. (-?, ?)
B. 
C. 
D. 
Mathematics