s8honican7oram
s8honican7oram s8honican7oram
  • 06-07-2016
  • Mathematics
contestada

if f(x) = 3x 7, find f(a - 1) a. 3a 6 b. 3a 4 c. 3a 8 d. 3a 10

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caylus
caylus caylus
  • 08-07-2016
Hello,

Let's suppose f(x)=3x+7
f(a-1)=3(a-1)+7=3a-3+7=3x+4
Answer B with a sign "++++++++++++++++++++++++++++"


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