Question

Jess plans to increase the amount of money she saves each month. She can increase her savings in the following ways:


Month
1
2
3
4
5
Option 1
20
22
24.2
26.62
29.28
Option 2
20
22.2
24.4
26.6
28.8
Option 3
20
24
28.8
34.56
41.47


If Jess wants to increase her savings exponentially, which option(s) should she choose?

Answer 1

Only option 1, because it shows equal increases in equal intervals of time

Only option 2, because it shows equal increases in equal intervals of time

Either option 1 or option 3, because they show increases in time by the same percentages

Either option 2 or option 3, because they show increases in time by the same percentages

Answer 2

I know it's either the second or third one but I'm not sure which