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

User BWA
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f(-5)=9-4|-5+1|\\ f(-5)=9-4|-4|\\ f(-5)=9-4\cdot4\\ f(-5)=9-16\\ f(-5)=-7
User KAnGeL
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1 vote

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
User Constant Meiring
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