Answer:

Step-by-step explanation:
A tank contains 240 liters of fluid in which 20 grams of salt is dissolved.
- Volume of the tank = 240 liters
- Initial Amount of Salt in the tank, A(0)=20 grams
Brine containing 1 gram of salt per liter is then pumped into the tank at a rate of 6 L/min
(concentration of salt in inflow)(input rate of fluid)

(concentration of salt in outflow)(output rate of fluid)

Rate of change of the amount of salt in the tank:


We then solve the resulting differential equation by separation of variables.

Taking the integral of both sides

Recall that when t=0, A(t)=20 (our initial condition)

Answer:99/14
Step-by-step explanation:
33/7÷4/6
33/7×6/4
(33×6)÷(7×4)
198/28
Reduce to lowest term
99/14
Answer:
E. increases; shifts the AD curve rightward
Step-by-step explanation:
Tax cut means lower tax income tax rates, that mean individuals will have more of their income, that is more money to spend leading to increase in aggregate demand. This will lead to a rise (increase) in the aggregate demand curve which implies rightward movement.
Answer:
C. 1, -9
Step-by-step explanation:
I just put it on desmos