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What unit of been sure would be appropriate for the volume of a sphere with a radius of 2 meters

Carla is saving money for a trip this summer. she already has some money in her savings account and will add the same amount to her account each week. at the end of 2? weeks, carla has? $130. at the end of 8? weeks, she has? $280. write a linear function in the form y=mx+b to represent the amount of money m that carla has saved after w weeks.

Joe had 25 pencils he divided them into 5 pieces how many pieces does he have left