If the following defines a one-to-one function, find its inverse. If not, write "Not one-to-one."{(-2, 4), (2, -4), (8, -2), (-8, 2)}
A. {(4, -2), (-4, 2), (-2, -8), (2, 8)}
B. Not one-to-one
C. {(4, -2), (-4, 2), (8, -2), (2, -8)}
D. {(4, -2), (-4, 2), (-2, 8), (2, -8)}
Answer: D
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Find the indicated control limits.For a production process for which there is a great deal of data since its last modification, the population mean ? and the population standard deviation ? are assumed known. For such a process we have the following values for an R chart: 
(The values of d2, D1, and D2 are found in the table of control chart factors).In a chalk-producing factory, after production, the length of six sample pieces of chalk is checked every 15 minutes. For this process, ? = 3.73 in. and ? = 0.15 in. Find the central line, UCL, and LCL for the range.
A. 0.380, 0.780, 0.031 B. 0.380, 0.762, 0.000 C. 0.406, 0.780, 0.031 D. 0.349, 0.738, 0.000
Answer the question.To solve for the lengths of the right triangle sides, which equation is correct? 
A. x2 = (3x)2 + (2x - 10)2 B. x2 + (3x)2 = (2x - 10)2 C. (2x - 10)2 = x2 + (3x)2 D. (2x - 10)2 + x2 = (3x)2
Graph the ellipse described.Foci at (- 4
, 0) and (4
, 0)Vertices at (-8, 0), (8, 0)
A. 
B. 
C. 
D. 
Use the MACRS depreciation rates table to solve the problem. Round to the nearest dollar.MACRS Depreciation Rates 
Angelica Healthcare purchased new lab equipment (7-year property) for $138,000. Find the accumulated depreciation at the end of 5 years.
A. $114,154 B. $107,212 C. $119,522 D. $130,051