Take the interactive diagnostic drill with real-time distractor analysis, Desmos calculator, and SM-2 spaced repetition.
If $|2x - 7| \le 5$ and $|3y + 4| \le 8$, what is the maximum possible value of the expression $x - y$?...
Inspect distractor trapIf $3^{2x+1} - 3^{2x} = 54$, what is the value of $x$?...
Inspect distractor trapFor how many real values of $x$ is $\sqrt{x + 5} = x - 1$?...
Inspect distractor trapIf $f(x) = ax + b$ where $a$ and $b$ are constants, and $f(f(x)) = 9x + 20$ for all real $x$, with $a > 0$, wh...
Inspect distractor trapIf $x$ is a positive real number such that $x = \sqrt{7 + 4\sqrt{3}} - \sqrt{7 - 4\sqrt{3}}$, what is the valu...
Inspect distractor trap