Complete the factoring.5x2 - 20x = 5x( )
A. 4 - x
B. x2 - 4
C. x - 4
D. 4 - x2
Answer: C
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Find the gradient field of the function.f(x, y, z) = 
A. ?f = - 
i - 
j - 
k
B. ?f = - 
i - 
j - 
k
C. ?f = 
i + 
j + 
k
D. ?f = 
i + 
j + 
k
Find the coordinates of the labeled points.
A. A(-5, 0); B(-1, -5) B. A(-5, 0); B(1, -5) C. A(-5, 5); B(1, -5) D. A(5, 0); B(1, -5)
Solve the problem.Suppose all items in an ice cream truck cost $0.85 per item. (a) Fill in the table with the correct response for the cost f(x) of purchasing x items. (b). Write the linear function that gives a rule for finding the cost. 
A.
(a)  | (b) f(x) = 0.85 |
B.
(a)  | (b) f(x) = 0.85x |
C.
(a)  | (b) f(x) = 0.85x + 0.85 |
D. None of these
Find the domain and range of the relation.{(-8,7), (-5,-2), (-6,6), (-6,5)}
A. D = {-5, -6, -8, -6}; R = {-2, 6, 7, 5} B. D = {-5, -6, -8}; R = {-2, 6, 7, 5} C. D = {-2, 6, 7, 5}; R = {-5, -6, -8} D. D = {-5, -6, -8, 6}; R = {-2, 6, 7, 5}