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2015-07-26T16:42:04+08:00

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Zelle is working on her TLE project. She has to make a handicraft scarf. She already knitted 61 rows. Each day, she adds 17 more rows.
Question: How many rows does her scarf has 16 days later?
Given:                                                                          Solution:            
a1 = 61                                                            
an = a1 + (n -1)d
        
d = 17                                                              a16 = 61 + (16 - 1)17
     
n = 16                                                                    = 61 + 255
      
                                                                                             a16 = 316                         Final Answer: After 16 days, her scarf has already 316 rows.
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I got that from this website: http://slideplayer.com/slide/224032/#