I don’t understand the whole thing i need help How many plants are shorter than 9 inches?

9 plants

Step-by-step explanation:

Since we are trying to find the number of plants that are shorter than 9 inches, we will look at the plants that are 2, 3, 4, 5, 6, 7, and 8 inches tall.

Each x counts as a plant

# of 2 inch plants: 1

# of 3 inch plants: 1

# of 4 inch plants: 4

# of 5 inch plants: 1

# of 6 inch plants: 1

# of 7 inch plants: 1

# of 8 inch plants: 0

Add up the number of plants:

1 + 1 + 4 + 1 + 1 + 1 + 0 = 9

9 plants

Hope this helps!

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".

#15. square

step-by-step explanation:

because quadrilatural (idk how to spell it) means somthing that is not 3d or like, equal sides (or somthing like that   you know what i meanz)

hope this halps!

bai!