Provide an appropriate response.One solution of the system 
is x = 1 and y = 1. Another solution is
A. 
, y = - 
B. x = 1, y = -1
C. 
, y = - 
D. 
, y = - 
E. x = 0, y = 0
Answer: D
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Find the gradient field of the function.f(x, y, z) = 
A. ?f = 
i + 2yj + 2zk
B. ?f = 
i + 
j + 
k
C. ?f = 
i + 
j + 
k
D. ?f = 
(x2 + y2 + z2)i + 
j + 
k
Solve the problem.During his August vacation, Zev charged the following expenses to his credit card: meals 
gasoline 
and hotel 
On September 1, he makes a payment of $236 and makes no other purchases with this credit card. The bank that issues the card charges 
interest per month. What is the balance due on October 1?
A. $425.63 B. $609.41 C. $370.11 D. $388.62
Factor the trinomial.x2 + 17x + 72
A. (x - 8)(x - 9) B. (x + 8)(x + 9) C. (x + 72)(x + 1) D. (x - 8)(x + 9)
Classify as either true or false.The distance between x and y can be represented as |x + y|.
A. True B. False