Question

Since the beginning of school, Steven has been saving money to buy a new phone. His bank balance is represented by the graph below.

a. According to the graph, about how much money had Steven saved after 2 weeks of school?
b. About how much money did Steven probably have after 4 weeks of school? How can you tell?

c. If he keeps saving at the same rate, how much will he have saved by Week 7? Explain how you know.

Answer 1

a. According to the graph, Steven had saved about $100 after 2 weeks of school.

b. According to the graph, Steven probably had about $200 after 4 weeks of school because the graph shows that he saves an average of $50 per week, so after 4 weeks, he would have saved $50 x 4 = $200.

c. If Steven keeps saving at the same rate, he will have saved $350 by Week 7. This is because he saves $50 per week, so after 7 weeks, he will have saved $50 x 7 = $350.