: A tank contains salt dissolved in 120 gallons of water. A solution containing 1/2 pound of salt per gallon is pumped into the tank at a rate of 6 gallons per minute. At the same time, the tank is drained at a rate of 6 gallons per minute. Let y be the number of pounds of salt in the tank at time t, measured in minutes. (i) Write a differential equation modeling the scenario described above. (Note: no work required)

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11 -1> 1 -1+ a

-12 > a

answer: i wpould go with c

step-by-step explanation:

answer: it actually depends on which is the independent variable and which is the dependent variable. let us say we're looking at a linear equation. y=2x+3. we theoretically could switch the equation to be x=(y-3)/2 and it would be the same line. so either a causes b or it can be that b causes a. so technically the answer is false

step-by-step explanation: