If b_n is defined by b_n = 3n + 1, what is b_20?

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Multiple Choice

If b_n is defined by b_n = 3n + 1, what is b_20?

Explanation:
Plugging a value into a linear expression. For b_n = 3n + 1, substitute n = 20: b_20 = 3(20) + 1 = 60 + 1 = 61. This shows how the function scales input by 3 and then adds 1. So the result is 61.

Plugging a value into a linear expression. For b_n = 3n + 1, substitute n = 20: b_20 = 3(20) + 1 = 60 + 1 = 61. This shows how the function scales input by 3 and then adds 1. So the result is 61.

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