3 years ago

25 Points!! The graph represents the first three terms in an arithmetic sequence.

Mathematics

2 answers:

atroni [7]3 years ago

7 0

Answer:

I solved the sum and added it in the attachment!

Drupady [299]3 years ago

4 0

Answer:

Step-by-step explanation:

$y-1=\frac{4-1}{2-1}(x-1)\\y-1=3(x-1)\\y=3x-3+1\\y=3x-2$

an=an-1+3

when x=15

y=3×15-2=45-2=43

a15=43

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