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elena55 [62]
3 years ago
7

The function rule T(m)=450-8m represents the amount of water T(m) (in liters) in a holding tank after being drained at a rate of

8L/min for m minutes. how much time has passed if there are 274 L of water in the tank
A. 18 min
B. 20 min
C. 22 min
D. 24 min

if you can please explain and work it out please
Mathematics
2 answers:
suter [353]3 years ago
7 0
Well they give you the equation and they want you to solve for time given that you know the amount of water in the tank.  They tell you T=274 and that

T=450-8m  so using the value T=274 in the equation to the left gives you:

274=450-8m  subtract 450 from both sides

-176=-8m  divide both sides by -8

22=m

So 22 minutes have passed when there is 274L remaining...
bija089 [108]3 years ago
4 0
22  sorry if I'm wrong
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