I\'m trying to solve this problem but I know my equation for x(t) is wrong becau

Question

I'm trying to solve this problem but I know my equation for x(t) is wrong because I'm getting a negative answer for b which isn't right. I tried a different way and ended up getting a C value of negative 2 billion, which also isn't right. Any help would be much appreciated.

1. A brine solution of salie rlows at a consfimi rakc ot' S1-min imte s e: tank that mibly heid 100L of pure water he solution insid: t.: tank is kepi wl Jied and lows eet e the tank at s rate of 4 L/min. If the cuncunirstion of salt in the brire emering the tank ia 02 kul a) Determirac the mass of salt in the lank after t mirnes? b) Wher will the comcentration of lbe salt in the tank reach L /t nanl/-tion atpri : L/f.it

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