Stella wants to save money to buy a new laptop. every month she sets aside an increasing amount of money to save for the laptop. in her first month, stella has $5 saved. in the second month, she has $10, and in the third month, she has $20 set aside for the laptop.

if the pattern above continues, how much will stella have after 6 months?

$256

$315

$635

$1,024