Find the center and radius of the sphere.2x2 + 2y2 + 2z2 - x + y - z = 9
A. C
, a = 
B. C
, a =
C. C
, a = 
D. C
, a = 
Answer: D
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Solve the problem.The ABC Nut Company produces two brands of nuts by combining peanuts and premium mixed nuts. They have 3263 units of peanuts and 2717 units of mixed nuts on hand, and they all must be used before the next shipment arrives. One batch of Economy mix uses 27 units of peanuts and 13 units of mixed nuts. One batch of Supreme uses 20 units of peanuts and 26 units of mixed nuts. If the profit on Economy is 
per batch and the profit on Supreme is 
per batch, what is the maximum profit?
A. $13,200 B. $62,070 C. $2990 D. $61,640
Find the center of mass of a thin plate of constant density covering the given region.The region bounded by the parabola y = 36 - x2 and the x-axis
A. 
= 0, 
= 
B. 
= 0, 
= 
C. 
= 
, 
= 0
D. 
= 0, 
= 
Graph the function.y = -tan x
A. 
B. 
C. 
D. 
Simplify the expression.54
A. Exponent: 5, base: 4 B. Exponent: 4, base: 54 C. Exponent: 1, base: 54 D. Exponent: 4, base: 5