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10 votes
10 votes
Solve and graph each solution set.2 s f(x) = 20, where f(x) = 3x - 1

User Jchung
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1 Answer

25 votes
25 votes

Okay, here we have this:


2\leq3x-1\leq20
\begin{gathered} 2\leq3x-1\text{ and }3x-1\leq20 \\ 3x-1\ge2\text{ and 3x}\leq21 \\ 3x\ge3\text{ and x}\leq7 \\ x\ge1\text{ and x}\leq7 \end{gathered}

Finally we combine the ranges and obtain:


1\leq x\leq7

And, according with this the correct answer is the option A.

User StuffandBlah
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3.0k points