Write the equation of the circle in standard form. Find the center and radius. Then sketch the graph.x2 + y2 - 8x + 2y + 8 = 0
A. (x - 4)2 + (y - 1)2 = 9
(h, k) = (4, 1), r = 3
B. (x - 4)2 + (y + 1)2 = 9
(h, k) = (4, -1), r = 3
C. (x + 4)2 + (y + 1)2 = 9
(h, k) = (-4, -1), r = 3
D. (x + 4)2 + (y - 1)2 = 9
(h, k) = (-4, 1), r = 3
Answer: B
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Solve.An open-top rectangular box has a square base and it will hold 107 cubic centimeters (cc). Each side of the base has length x cm. Its surface area S is given byS(x) = 
+ x2.
Graph the function on the interval (0, ?).
A. 
B. 
C. 
D. 
Find an equation of variation in which y varies inversely as x and the following is true.y = 0.8, when x = 0.5
A. y = 
B. y = 
C. y = 
D. y = 1.6x
Sketch the vectors u and w with angle ? between them and sketch the resultant.
= 5, 
= 1, ? = 60°
A. 
B. 
Solve the problem.A recipe for fudge brownies calls for 3
cups of cocoa per batch. If you are making 2
batches, how many cups of cocoa are needed?
A. 2
cups
B. 5
cups
C. 8
cups
D. 2
cups