The following frequency distribution shows the distribution of delivery times (in days) for swimstuff.com customer orders during the last month. 
What is the relative frequency of the orders delivered from 1 day up to 3 days?
Definitions:
Accumulated Depreciation
The total amount of depreciation expense that has been recorded for an asset since its acquisition.
Trade-In Allowance
The amount credited to the buyer by the seller when a buyer trades in an old item towards the purchase of a new item.
Accumulated Depreciation
The cumulative depreciation expense recorded for an asset from the time it was operational, thereby lowering its recorded value in the balance sheet.
Commercial Substance
A concept in accounting that refers to a transaction significantly altering the cash flows of an entity, necessitating its recognition in financial statements.
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