ACT 2021 June(D06) Math Question 52 Explanation - ACT Helper

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2021 June(D06) Math Question 52
Sequences and Patterns
- Arithmetic Sequences
Choice J
It is given that $S_1=4$
$S_2=2$ $S_1$ $-3=2($ $4$ $)-3=5$
$S_3=2$ $S_2$ $-3=2($ $5$ $)-3=7$
$S_4=2$ $S_3$ $-3=2($ $7$ $)-3=11$
$S_5=2$ $S_4$ $-3=2($ $11$ $)-3=19$
$S_1$ $S_2$ $S_3$ $S_4$ $S_5$
Note: drag the slider from $S_1$ all the way to $S_5$ !
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