3 years ago

Function (f) is defined by the equation f(x)=3x-7. Find the value of c so that f(c) =20 is true.

Mathematics

1 answer:

9966 [12]3 years ago

4 0

Answer:

c = 9

Step-by-step explanation:

Given f(x) = 3x - 7 , then

f(c) = 3c - 7 = 20 ( add 7 to both sides )

3c = 27 ( divide both sides by 3 )

c = 9

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