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Max is stacking logs at his campground for firewood. After his first load of logs, he has 8 logs on the stack. After his seventh load of logs, he has 62 logs on the stack. Use sequence notation to represent the arithmetic function.

an = 8 + 6(n − 1)
an = 62 + 6(n − 1)
an = 8 + 9(n − 1)
an = 62 + 9(n − 1)

2 Answers

6 votes

Answer: it is 8 + 9(n - 1). (third one) 8 is the start of it. so, we have 6 loads left. subtract 62 from 8, leaving us with 54. then, 54 /6 equals 9, therefore the answer

User Almira
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4 votes

Answer:

C

Explanation:

We want to find the recursive function of Max's stack of logs. Let's use the formula
a_n=a_1+d(n-1) to help us out.

In the formula,
a_n represents the nth term,
a_1 represents the first term, and d is the common difference.

Since the first load of logs had 8 logs in it, we know that
a_1=8. Now, we want to find d, so let's use the information that
a_7=62. Plug these into the formula to find d:


a_n=a_1+d(n-1)


a_7=a_1+d(7-1)

62 = 8 + 6d

6d = 54

d = 9

Thus, our final equation is:
a_n=8+9(n-1), which is C.

User Jens Marchewka
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