gabe goes to the mall. If x is the number of items ​bought, the expression 18.31x+22 gives the amount spent in dollars at one store. Then spent 20 dollars at another store. Find the expression which represents the amount spent at the mall. Then estimate how much spent if 3 bought items.

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water molecules will move from the side of higher water concentration to the side of lower concentration until both solutions are isotonic. at this point, equilibrium is reached. in an isotonic solution, the flow of water in and out of the cell is happening at the same rate.

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