Question

Mr. Dane and Ms. Kim each opened a savings account. The table below shows how much they

have in their accounts at the end of each month.
Months
1
2
3
Mr. Dane
$10 $20 $30 $40
Ms. Kim $10 $20 $40 $80
SAVINGS
If the patterns continue, how much more has Ms. Kim saved at the end of 5 months than Mr.
Dane has?
A $40
B $90
C $110
D $210

Answer 1

Ms. Kim, will have $110 more than Mr. Dane.

Explanation:

Mr. Dane's savings are increasing linearly (S= 10x)

While Ms. Kim's savings are increasing exponentially. I.E. doubling every month.

So after 5 months Mr. Dane will have $50, and Ms. Kim will have $160.

$160 - $50 = $110