Question

Karen has been withdrawing the same amount of money from her bank account every month. The table below shows the amount of money in her account after different amount of time. Time (months) 6, 8, 10, 12Money (dollars) 460, 330, 200, 70Answer the following questions.(a) Howmuch money was in her bank account before Karen started withdrawing money? ? dollars(b) Choose the statement that best describes how the time and the amount of money in her account are related. Then give her the value requested. _ As time increases, the amount of money in her account decreases.At what rate is the amount of money in her account decreasing? ? dollars per month_ As time increases, the amount of money in her account increases.At what rate is the amount of money in her account decreasing? ? dollars per month

Answer 1

a. The amount in Karen's account before she started withdrawing= $850

The difference between 6 and 8 months is 2 months. That is , (8 - 6 = 2 = 130 )

The difference between the amount in the 6th month and the 8th month is 130, that is, ( 460 - 330)

This means the she withdraws $130 in every two months.

So, between the 0 month and the 6th month, the amount that was withdrawn from the account is $390 that is, ( 130 x 3 which give us $390).

So, the amount in the account before the withdrawal started= 390+460 = $850.

b. The time and the amount in the bank are negatively related. That is, the relationship between time and the amount in the account is inverse.

The amount of money is decreasing by $65 every month.