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brent13p
brent13p brent13p
  • 05-02-2015
  • Mathematics
Answered

Please help solve this. If f(x) = 9 − 4|x + 1|, find f(−5)

Verified Answer :

Anonymous Anonymous
  • 05-02-2015

\(f(x)=9-4|x+1|\\ f(-5)=9-4|-5+1|\\ f(-5)=9-4|-4|\\ Absolute\quad value\quad makes\\ the\quad numbers\quad inside\quad it\\ positive,\quad so\\ f(-5)=9-4\cdot 4\\ f(-5)=9-16\\ f(-5)=-7\)

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konrad509
konrad509 konrad509
  • 05-02-2015

\(f(-5)=9-4|-5+1|\\ f(-5)=9-4|-4|\\ f(-5)=9-4\cdot4\\ f(-5)=9-16\\ f(-5)=-7\)

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