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Paige has a cell phone plan that charges a monthly fee of $50.She has to pay $0.10 per minute over the first 500 she uses.if her bill was $55, how many minutes

This question is for math. which is algrebra 1

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David W. | I'll help you understand math!I'll help you understand math!
4.9 4.9 (63 lesson ratings) (63)
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55 = 0.1(m - 500) + 50
5 = 0.1m - 50
55 = 0.1m
m = 550 minutes

Comments

I solved it a different way i did :
  55=0.1(m-500)+50
  55=0.1m-50+50
  55=0.1m-0
  55-0=0.1
  55=0.1
  0.1=0.1
  550=m