Question

dada a função f (x) = 8x + 13, determine f (x) = 37​

Answer 1

8 . 37 + 13

296 + 13 = 309

Answer 2

$\begin{bmatrix}f=8x+13\\ f=37\end{bmatrix}\\\\\begin{bmatrix}8x+13=37\end{bmatrix}\\\\8x+13=37\\\\8x+13-13=37-13\\\\8x=24\\\frac{8x}{8}=\frac{24}{8}\\x=3\\\\\\f=8\cdot \:3+13\\f=37\\\\x=3,\:f=37$