(should be an easy word problem) the senior classes at high school a and highschool b planned separate trips to the county fair. the senior class at highschool a rented and filled 3 vans and 4 buses with 153 students. High school b rented and filled 7 vans and 8 buses with 321 students. each can and each bus carried the same humber of students. how many student can a van carry? how many students can a bus carry?

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".

1.30

step-by-step explanation:

just took the test and my answers down below!

step-by-step explanation:

check the pic :

b.

step-by-step explanation:

i just know