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All 27 Digital SAT skills, each labeled Foundation, Developing, or Advanced from your own results, so the weak ones are impossible to miss.
Central Ideas and Details
Information and Ideas · 41/218 answered
Foundation
Transitions
Expression of Ideas · 96/204 answered
Developing
Linear Equations
Algebra · 152/231 answered
Advanced
Sentence Boundaries
Standard English Conventions · 64/189 answered
Developing
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Easy9/84
123456789101112
Medium3/96Your level
123456789101112

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Every question ends with a worked explanation that names the trap you fell for. Misses land in Mistakes automatically; bookmarks land in Saved.

The function ff is defined by f(x)=3x2−5f(x) = 3x^2 - 5. What is the value of f(−2)f(-2)?

A−17-17
✕11
✓77
D3131
Explanation

Substitute x=−2x = -2: squaring first gives (−2)2=4(-2)^2 = 4, so f(−2)=3(4)−5=7f(-2) = 3(4) - 5 = 7. Choice B is the classic slip of squaring after multiplying, (3⋅−2)2−5(3 \cdot -2)^2 - 5, which is exactly the kind of trap the explanation calls out so you never take it twice.

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