Cassie deposits $40 in a savings account. The money earns $1.40 per month in simple interest, and she makes no further deposits. Is her account balance proportional to the number of months since her initial deposit? Please show your work.
Mathematics · Middle School · Wed Jan 13 2021
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Given the statement:
Cassie deposits $40 in a savings account. The money earns $1.40 per month in simple interest, and she makes no further deposits.
Determine if her account balance is proportional to the number of months since her initial deposit.
Explanation:
Since it is stated that the money is earning $1.40 per month in simple interest, this means that it will continue to earn the same amount if Casie, will not deposit. Hence her account balance is not proportional to the number of months since her initial balance this is due to the fact that her account balance is changing or increasing at $1.40 dollars per month.