Use exponential notation to write the repeated multiplication.9 ? 9
A. 93
B. 29
C. 92
D. 2 ? 9
Answer: C
Mathematics
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Find the average value of 
over the given region.
z8 over the rectangular solid in the first octant bounded by the coordinate planes and the planes 
, 
, 
A. 
B. 
C. 
D. 
Mathematics
Using the horizontal-line test, determine whether the function is one-to-one.
A. one-to-one B. not one-to-one
Mathematics
Find the product AB, if possible.A = 
, B = 
A. 
B. 
C. AB is not defined.
D. 
Mathematics
Determine whether the equation defines y as a function of x. y = 
A. function B. not a function
Mathematics