Charnika has $500 in a savings account at the beginning of the summer. She wants to have at least $200 in the account by the end
of the summer. She withdraws $25 each week for food, clothes, and movie tickets. How many weeks can Charnika withdraw money from her account? A: –10 or less
B: –10 or greater
C: 12 or less
D: 12 or greater
This question can be modeled using the equation 3x+4=52 (x is the purple marbles). To solve this equation subtract 4 from both sides, making it 3x=48. divide both by three showing x=16. This shows that 16 is the answer.
