If you save two pennies on January 1, four pennies on January 2, six pennies on January 3, and continue this pattern for one year (not a leap year), what will be the value of your entire savings, in dollars, at the end of that one year? Express your answer as a decimal without commas.

...?

Respuesta :

the answer is 
1J,  2J, 3J, ...............29D, 30D, 31D = 365 days
2     4     6 ........................................
 let be S  the value of entire savings
S= Sum 2K= 2 
Sum K      = 2 [365(365+1) / 2], 
      1<K<365    
 1<K<365
because  
Sum K = n(n+1) /2
               
1<K<n

finally S= 133590 pennies

Answer:

1335.90


Step-by-step explanation: