A ball fell for 23 seconds at a rate of 8 feet per second. A second ball fell for 3x less seconds at a rate of speed that is x feet per second slower than the first ball.

Which of the following equations could be used to determine how far the second ball fell?

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".

you first to choose the points and then move from then as the slope you have

four boxes of pizza

hope this