Compute the gradient of the function at the given point.
A. - 
i - 
j + 
k
B. - 
i - 
j + 
k
C. 
i - 
j + 
k
D. 
i - 
j + 
k
Answer: B
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 
A. Domain: all points in the xy-plane; range: all real numbers; level curves: ellipses 
B. Domain: all points in the xy-plane except (0, 0); range: all real numbers; level curves: ellipses 
C. Domain: all points in the xy-plane; range: real numbers > 0; level curves: ellipses 
D. Domain: all points in the xy-plane except (0, 0); range: real numbers > 0; level curves: ellipses 
Solve the problem using the table.Monthly Principal and Interest Payment per $1000 of Mortgage
Constance Hairston obtains a 30-year, $128,500 mortgage at 8% on a house selling for $154,000. Her monthly payment, including principal and interest, is $942.89. How much of the total cost will be interest?
A. $196,173.91 B. $232,033.66 C. $210,940.40 D. $274,221.60
Solve the problem.Suppose that f(x) = 5x. If f(x) = 
, what is x?
A. -3 B. -5 C. 3 D. 5
Perform the indicated operations and simplify the expression.
?
?
A. 
B. 
C. 
D. 
E. 