If \(x\) is a real number and \(\lfloor x \rfloor = -9\) how many possible values are there for \(\lfloor 5x \rfloor\)?
\(\lfloor x \rfloor = -9 \Rightarrow x \in [-9,-8)\\ 5x \in [-45,-40)\\ \text{so }\lfloor 5x \rfloor \in \{-45, -44, -43, -42, -41\}\\ \text{5 possible values}\)
I forgot what \( |_x_|\) means...
