Zoe is collecting books to donate. she started with 3 books and collects two more each week. she is using the equation b = 2w + 3, where bb is the total number of books collected and w is the number of weeks she has been collecting books. name the independent and dependent variables. then, create a graph to represent how many books zoe has collected when ww is 5 or less.

Independent variable: b - books

Dependent variable: w - weeks

graph attached

Step-by-step explanation:

b = 2w + 3

b = total number of books collected

w = is the number of weeks

So, the number of books depend on the number of weeks, so

Independent variable: b - books

Dependent variable: w - weeks

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".