Solve the system in terms of the arbitrary variable x.x - 3y + z = 353x - y - z = 21
A. {(x, x - 14, 2x - 7)}
B. {(x, x - 14, 2x)}
C. {(0, -14, -7)}
D. {(x, x - 14, 3x - 7)}
Answer: A
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Use implicit differentiation to find dy/dx and d2y/dx2.y2 - x2 = 9
A. 
= 
; 
= 
B. 
= 
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= 
C. 
= 
; 
= 
D. 
= - 
; 
= 
Verify that the equation is an identity.
2 = 1 - sin x
What will be an ideal response?
Provide an appropriate response.An adjustable rate mortgage means:
A. payments will be larger than on a fixed rate mortgage B. the interest rate cannot change C. the interest rate is fixed for the first five years D. the interest rate can change
Determine, without graphing, whether the given quadratic function has a maximum value or a minimum value and then find that value.f(x) = -4x2 + 4x
A. maximum; 1 B. minimum; - 1 C. minimum; 1 D. maximum; - 1