Marcus currently has $42 and plans to save an additional $5 each week to buy a pair of shoes. he made a table showing the total amount of money he will have saved for different weeks. number of weeks 0 2 5 8 total amount of money ($) 42 52 67 82 write an equation in standard form that represents the relationship between the number of weeks and the total amount of money marcus will have saved. a. −x+5y=42 b. x+5y=42 c. −5x+y=42 d. 5x+y=42

y=5x+42

subtract 5x from both sides

-5x+y=42

multiply by -1

5x-y=-42

In standard form, Ax+By=C, the variable A cannot be a negative. However, this is not an option so go with c.

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".

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.