# SAT Math Multiple Choice Question 634: Answer and Explanation

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**Question: 634**

**4.** 7, 12, 22, 42, 82

Which of the following gives a rule for finding each term in the sequence after the first?

- A. Add 5 to the preceding number.
- B. Add 5 to the sum of all of the preceding terms.
- C. Double the preceding term and then subtract 2 from the result.
- D. Add 14 to the preceding term and divide that result by 2.

**Correct Answer:** C

**Explanation:**

**C**

**Advanced Mathematics (functions and sequences) EASY**

Notice that the rule in choice (C) generates the entire sequence: 7 (times 2 minus 2 equals) 12 (times 2 minus 2 equals) 22 (times 2 minus 2 equals) 42 (times 2 minus 2 equals) 82.