You have 128 ounces of milk and drink 16 ounces per day. what algebraic expression models the amount of milk you have after d days?

128-16(d)=your amount of milk you have

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he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

make sure you have version 2.50

try looking in the very back of the book : )

step-by-step explanation:

you can download it here