4 A custodian at an elementary school is painting the
playground. The custodian asked students in the
school what color they wanted the playground painted.
The results are shown in the graph. How many more
students voted for orange than for blue or yellow?
Playground Color
Number of Votes
Pink
Blue
Purple
Green
Yellow
Orange
Red

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".

21

step-by-step explanation: