darla is training for a marathon. she starts out running 1.5 miles and plans to add additional miles each week. below is a screen shot from her fitness tracker app on her phone.

weeks | total number of miles run each week.

1 | 3
2 | 4.5
3 | 6
4 | 7.5
5 | 9

part a:
assuming that this pattern of running continues for darla, write an equation that could be used to find the number of miles she runs for any number of weeks.

part b:
to complete a marathon, you must run 26.2 miles. using the table and/or equation, will darla be able to complete a marathon after 14 weeks of training?

answer all parts you so much : )

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Marking brainliest for original answer.. are these two triangles similar? how can you tell?