Marcus and his dad were going camping. When they went into the garage to get their tent they noticed it was ripped. Marcus’s dad said he could fix the tent. He would buy some new material to cover the one rectangular side that ripped.

he needs 55 to cover the one rectangular side of the tent with the rip

one rectangular side=55

If Marcus’s dad wanted to re-cover the whole tent including the bottom, he  would need 189.

3 rectangular sides=165

2 triangular sides=24

165+24=189

Step-by-step explanation:

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".

sorry not sure

step-by-step explanation: