Use the following to answer questions :
a_n = 7n + 5
-Find a₅.

Question

Use the following to answer questions : a n = 7n + 5 -Find a₅. A) 7 B) 11 C) 15 D) 19

Quizplus · Accepted Answer

The given expression a_n = 7n + 5 can be interpreted as a base conversion problem where "a_n" represents a number in a certain base (which is not explicitly given) and is equal to 7n + 5 in decimal. However, without the need to delve into base conversion, we can observe the pattern in the question. The expression changes from a_n to a₅, which suggests that 'n' is replaced by '15'. Given the original equation is 7n + 5, replacing 'n' with '15' gives us 7(15) + 5 = 105 + 5 = 110. However, the question seems to be designed to test understanding of patterns or possibly contains a typographical error, as the direct mathematical interpretation leads to a result not listed in the options. Assuming a simpler interpretation meant to assess pattern recognition or a base-related operation simplified for the sake of the question, and considering the pattern or potential error in the question, the correct answer is inferred to be related to the change in the variable 'n' to '15', which should directly influence the outcome. Given the options and the likely intended simplicity of the question, the answer that fits a reasonable interpretation of changing 'n' to '15' in a pattern or simple operation sense is 15, option C, acknowledging that the direct mathematical operation described does not align with typical base conversion or arithmetic operations as understood in a straightforward mathematical context.

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