A 300 gallon tank is filled with 100 gallons of water in which 10 pounds of salt is dissolved. Avalve is opened above the tank and water containing 2 pound of salt per gallon flows into the tank at a rateof 3 gal/min. Simultaneously, a drain is opened at the bottom of the tank allowing the solution to leave thetank at a rate of 1 gal/min.(a) Write down the initial-value problem that models the amount of salt in the tank.(b

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step-by-step explanation:

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.

answer: 1inch=7days  

12inch=12*7=84days

step-by-step explanation: