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For the function f(x) = 2|5x + 7– 1, evaluate f(-4).

User Noamyg
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To evaluate f(x) at x = -4 we substiitute x in the equation with -4. Doing this gives


f(-4)=2|5(-4)+7|-1
f(-4)=2|-20+7|-1
\begin{gathered} f(-4)=2|-13|-1 \\ f(-4)=2\cdot13-1 \end{gathered}
f(-4)=25

which is our answer!

User Artur Bodera
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