Praxis — An adaptive tutor that shows its working Guest learner

Algebra › Functions and graphs

0/0 this session +0 XP
Multiple choice Hard composition ~110s

If f(x) = 3x − 1 and g(x) = x², what is (f ∘ g)(2) — that is, f(g(2))?

Hints are free to take and they are counted. A correct answer after two hints moves your mastery less than one without — which is the honest way to score it.

Why this question? this skill is new to you; it is harder than ideal — nothing easier is available on this skill, so expect roughly 21%; and it needs calibrating — few people have tried it Predicted chance you get it: 21% — the selector aims at 78%.
difficulty fit 0
skill need 0.75
review boost 0
calibration bonus 0.12
recency penalty 0
repetition penalty 0
frustration 0.143