Perform the indicated operation. Simplify the result, if possible.
÷ 
A. 7x + 7y
B. 
C. 
D. 
Answer: B
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Divide and write answer in lowest terms.5
÷ 3
A. 1
B. 1
C. 1
D. 2
Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 7x2 - 2y2
A. Domain: all points in the x-y plane; range: all real numbers; level curves: ellipses 
B. Domain: all points in the first quadrant of the x-y plane; range: all real numbers; level curves: hyperbolas 
C. Domain: all points in the x-y plane; range: all real numbers; level curves: hyperbolas 
D. Domain: all points in the x-y plane; range: real numbers z ? 0; level curves: ellipses 
Find the specified domain.For f(x) = 
and g(x) = 
, what is the domain of g ? f?
A. (-?, 0) ? (0, 5) ? (5, ?)
B. (-?, 5) ? (5, ?)
C. (-?, 0) ? (0, ?)
D. (-?, 0) ? 
? 
Multiply by using the rule for the square of a binomial.(3 - 8x)2
A. 64x2 - 9 B. 8x2 - 9 C. 8x2 - 48x + 9 D. 64x2 - 48x + 9