DiamNeli DiamNeli

02-02-2019
Mathematics

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Which one is the correct answer, and why?

Which one is the correct answer and why class=

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wegnerkolmp2741o wegnerkolmp2741o

02-02-2019

Answer:

D f(n) = 7n-12

Step-by-step explanation:

The first term is -5

The second term is -5+7 =2

The common difference is 7

an = a1 +d(n-1) where d is the common difference

= -5 +7(n-1)

Distribute the 7

= -5 +7n -7

7n -12

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