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Functions

Quick questions on Sequences and series - ACT Mathematics

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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Find the 8th term of the arithmetic sequence 3,7,11,…3, 7, 11, \ldots [1 point]
What is q2?
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Find the 4th term of the geometric sequence 5,10,20,…5, 10, 20, \ldots [1 point]
What is wrong exponent in the geometric rule?
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an=a1⋅rn−1a_n = a_1 \cdot r^{n-1}; the exponent is the term number minus one.

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