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What is #f(-3)# for the function #f(x) = -5x -7#?

1 Answer

Nov 17, 2015

#8#

Explanation:

#f(-3)# basically means substitute #-3# for #x# in the function #-5x - 7#. In this case, substituting #-3# for #x# results in:

#f(-3) = -5(-3) - 7#
#f(-3) = 15 - 7#
#f(-3) = 8#

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