Mathematics, 13.05.2021 01:00 juansoto227711

On Fumiya's tenth birthday, his grandfather deposited $40 in a savings account for him. Each year, his grandfather
deposited twice the amount of the previous year's deposit.
How much money did his grandfather deposit in the account
on the day Fumiya turned eighteen?
A $7200
B $17,920
C $13,500
D $10,240

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