Amber has some state quarters in her pocket. she collects the following data by randomly pulling one quarter recordings the state and then replacing it. which is the best estimate of the number of times amber would pull out a new york quarter if she pulled out a quarter another 300 times? a 60b 90c 120d 180

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".