Solve the problem.If a person puts one penny in a piggy bank on the first day, two pennies in on the second day, three pennies in on the third day, and so forth, how much money will be in the bank after 30 days?
A. $2.33
B. $9.30
C. $0.30
D. $4.65
Answer: D
Mathematics
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A. 
B. 
C. 
D. 
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