Question

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

Answer 1

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.