Question

Which expression represents the amount of money in Frank's account?

Frank deposits $20 a week into his bank account for several weeks.
a. 20+d
b. 7d
c. 20-d
d. 20d

Answer 1

The correct expression to represent the amount of money in Frank's account after depositing $20 a week for 'd' weeks is 20d.

Step-by-step explanation:

The expression that represents the amount of money in Frank's account after he deposits $20 a week is given by the formula for a linear relationship between the amount of money and the number of weeks.

Frank starts with zero dollars in his account and each week adds $20. This is a simple linear relationship, where each week increments the total amount by $20. The correct way of representing this relationship is to multiply the number of weeks by the weekly deposit amount.

Therefore, the expression is 20d, where 'd' is the number of weeks. For example, if Frank has been depositing money for 5 weeks, the amount will be 20 times 5, which equals $100.