Answer:
3^7 = 2,187
3^10 = 59,049
9^7 = 4,782,969
9^10 = 3,486,784,401
Step-by-step explanation:
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Decrease in dollars is $555.00, $6845.00 was in his account at the end of last year.
7400 times 7.5/100
=74 times 7.5
=$555.00
7400-555=$6845.00
it's8
Hope it helps
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