Provide an appropriate response.
Evaluate the function f (x) = 6 - x for the value f (9).
A. 3
B. -3
C. 0.6
D. -9
Answer: B
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Find all the first order partial derivatives for the following function.f(x, y, z) = x2y + y2z + xz2
A. 
= 2xy; 
= x2 + 2yz; 
= y2 + 2xz
B. 
= 2y + z2; 
= x2 + 2z; 
= y2 + 2x
C. 
= 2xy + z2; 
= x2 + yz; 
= y2 + xz
D. 
= 2xy + z2; 
= x2 + 2yz; 
= y2 + 2xz
Determine whether the indicated ordered pair lies on the graph of the given equation.y = 
- 4, (4, 0)
A. Yes B. No
Provide an appropriate response.A check is the only means of withdrawing funds from a checking account.
A. True B. False
Find the x-intercepts of the polynomial function. State whether the graph crosses the x-axis, or touches the x-axis and turns around, at each intercept. f(x) = -x2(x + 6)(x2 - 1)
A. 0, touches the x-axis and turns around; 6, crosses the x-axis; -1, touches the x-axis and turns around; 1, touches the x-axis and turns around B. 0, crosses the x-axis; -6, crosses the x-axis; -1, crosses the x-axis; 1, crosses the x-axis C. 0, touches the x-axis and turns around; -6, crosses the x-axis; -1, crosses the x-axis; 1, crosses the x-axis D. 0, touches the x-axis and turns around; -6, crosses the x-axis; 1, touches the x-axis and turns around