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 ### Methods
 #### calculateChange(unitsTendered, price)
 
-**unitsTendered:** An array of instances of some kind of MonetaryUnit subclass.  The units tendered all have the same currency and that the amount tendered is greater than price.
+**unitsTendered:** An array of instances of some kind of MonetaryUnit subclass.  The units tendered all have the same currency and the amount tendered is greater than price.
 
-**price:** Number. You can assert that the units tendered match the currency for price, which is why price is just a number.
+**price:** Number. The units tendered match the currency for price, which is why price is just a number.
 
 **Returns** true if change can succesfully be dispensed, otherwise returns false to issue a refund and cancel the product.
 
 ## ChangeDispenser Class
-An instance of ChangeDispenser is programmed to physically know what change it has to dispense and physically how to dispense it.  Assume that ChangeDispenser is a thin JavaScript layer over native code.
+An instance of ChangeDispenser is programmed to physically know what change it has to dispense and physically how to dispense it.  ChangeDispenser is a thin JavaScript layer over native code.
 
 ### Properties
 For every currency unit available, the JavaScript layer dynamically defines properties that match the class name of the monetary units using Object.defineProperty. It defines the properties as read-only properties using getter methods that return new arrays.
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