Question

Nick follows a rule to deposit money into his savings account each month. The past 4 months, he deposited 7, thirteen, nineteen, and twenty-five dollars. His sister determines that his next deposit should be twenty-five plus seven equals thirty-two dollars. What error did she make? What should his next deposit be? Explain your answer.

Answer 1

each deposit is 6 $ more than the previous so it should be 31