Derive the following result “algebraically” using the properties listed in Theorem 6.2.2. Give a reason for every step that exactly justifies what was done in the step.

For all sets A, B, and C, (A ? C) ? B = (A ? B) ? (C ? B).


Mathematics

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Find a formula for the inverse of the function described below.32° Fahrenheit = 0° Celsius. A function that converts temperatures in Celsius to those in Fahrenheit is   .

A. f-1(x) = (x + 32)
B. f-1(x) = x + 32
C. f-1(x) = x + 32
D. f-1(x) = (x - 32)

Mathematics

The graph of a function f is given. Use the graph to answer the question.Find the numbers, if any, at which f has a local maximum. What are the local maxima?

A. f has no local maximum B. f has a local maximum at x = 0; the local maximum is -2 C. f has a local maximum at -?; the local maximum is 2 D. f has a local maximum at x = -? and ?; the local maximum is 2

Mathematics

Find the first term and the common ratio of the geometric sequence.an = 9-n

A. a1 = - , r = 9-n
B. a1 = -1, r = -9
C. a1 = 1, r = 9
D. a1 = , r = 

Mathematics

Graph the compound inequality.3x - 2y ? 6 and x - 1 > 0

A.

B.

C.

D.

Mathematics