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A water tank is drained. The following function gives the volume, in liters, of the water remaining in the tank 
t minutes after the drain is opened:

V(t)=3000(1-0.05 t)^(2)
What is the instantaneous rate of change of the volume after 10 minutes?
Choose 1 answer:
(A) - 
150 liters per minute
(B) -150 minutes per liter
(C) 750 liters per minute
D 750 minutes per liter

A water tank is drained. The following function gives the volume, in liters, of the water remaining in the tank t t minutes after the drain is opened:\newlineV(t)=3000(10.05t)2 V(t)=3000(1-0.05 t)^{2} \newlineWhat is the instantaneous rate of change of the volume after 1010 minutes?\newlineChoose 11 answer:\newline(A) 150 -150 liters per minute\newline(B) 150-150 minutes per liter\newline(C) 750750 liters per minute\newline(D) 750750 minutes per liter

Full solution

Q. A water tank is drained. The following function gives the volume, in liters, of the water remaining in the tank t t minutes after the drain is opened:\newlineV(t)=3000(10.05t)2 V(t)=3000(1-0.05 t)^{2} \newlineWhat is the instantaneous rate of change of the volume after 1010 minutes?\newlineChoose 11 answer:\newline(A) 150 -150 liters per minute\newline(B) 150-150 minutes per liter\newline(C) 750750 liters per minute\newline(D) 750750 minutes per liter
  1. Find Derivative of V(t): We need to find the derivative of V(t)V(t) to get the rate of change.V(t)=3000(10.05t)2V(t) = 3000(1 - 0.05t)^2Let's find V(t)V'(t), the derivative of VV with respect to tt.
  2. Apply Chain Rule: Using the chain rule, V(t)=2×3000(10.05t)×0.05V'(t) = 2 \times 3000(1 - 0.05t) \times -0.05\newlineV(t)=300×(10.05t)V'(t) = -300 \times (1 - 0.05t)
  3. Substitute t=10t = 10: Now we substitute t=10t = 10 into V(t)V'(t) to find the instantaneous rate of change at t=10t = 10 minutes.\newlineV(10)=300×(10.05×10)V'(10) = -300 \times (1 - 0.05 \times 10)
  4. Simplify Expression: Simplify the expression.\newlineV(10)=300×(10.5)V'(10) = -300 \times (1 - 0.5)\newlineV(10)=300×0.5V'(10) = -300 \times 0.5
  5. Calculate Final Value: Calculate the final value. V(10)=150V'(10) = -150

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