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? a)$1,024 b)$256 c)$315 d)$635

c) $315