Fitness Club CanFit charges a $280 initial fee to join the club and a $15 monthly fee. Fitness 'R' Us charges an initial fee of $240 and $25/month. a) Write an equation to represent the cost of membership at each club. b) Find POI. c) If you are planning to join for 3 year(s), which club should you join?

a) 280 + 15x = cost

  240 + 25x = cost

b) 280 + 15x = 240 + 25x which is 4 months

c) Fitness Club CanFit

Step-by-step explanation:

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answer

ending amount = beginning amount / (2^n)

where "n" = number of half-lives (or elapsed time / half-life)

ending amount = 50 mg / (2 ^10 / 5.3)

ending amount = 50 mg / (2 ^ 1.8867924528)

ending amount = 50 m / 3.6981210597

ending amount = 13.5203794557 mg

or about 13.5 mg remain

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