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What is the value for F(21) = 3x + 18

User Shubham AgaRwal
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1 Answer

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23 votes

What is the value for f(21) = 3x + 18​

Remember that

f(21) is the value of the function f(x) when the value of x=21

so

we have

f(x)=3x+18

For x=21

substitute

f(21)=3(21)+18

f(21)=81

User Jim McGaw
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