ACT Math Practice Question #2055 (Hard (540)) | Test Citadel
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ACT Math Difficulty: Hard (540)

Digital ACT Math Practice Question #2055

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The first term of an arithmetic sequence is 15, and the common difference is -3. What is the 22th term of this sequence?
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a_22 = 15 + 21*(-3) = -48.

Masterclass Solution & Distractor Trap Analysis

Formula for the nth term of an arithmetic sequence: a_n = a_1 + (n - 1)d = 15 + (22 - 1)(-3) = -48....

Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...

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