Sam initially invested $4,500 into a savings account that offers an interest rate of 3% each year. he wants to determine the number of years, t, for which the account will have less than or equal to $7,020.

Every year, Sam will have 103% of the amount from the previous year.

After the first year:

After the second year:

After the t-th year:

Therefore we have the inequality:

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".

1e+27

step-by-step explanation: