Suckless SAT Practice

SAT Practice0ef7164f-e18c-4aa3-999c-ece225b93166

Practice one SAT question at a time

Questions come from the Bluebook question bank.

The function $f$ is defined by $f (x) = 4 x^{- 1}$ . What is the value of $f left parenthesis 21 right parenthesis$ ?