Q: Once upon a time there was a wizard who invented a means of amplifying the sounds produced by the king's musicians. By dropping a by SalePlus" style="left: auto; opacity: 1; top: auto; box-sizing:...

Q: Once upon a time there was a wizard who invented a means of amplifying the sounds produced by the king's musicians. By dropping a by SalePlus" style="left: auto; opacity: 1; top: auto; box-sizing: border-box !important; border: 0px !important; bottom: auto !important; clip: auto !important; clear: none !important; display: inline-block !important; float: none !important; height: auto !important; margin: 0px 0px 0px 3px !important; max-height: none !important; max-width: none !important; min-height: 0px !important; min-width: 0px !important; overflow: visible !important; padding: 0px !important; position: static !important; right: auto !important; text-decoration: underline !important; text-transform: uppercase !important; -webkit-transform: none !important; transform: none !important; vertical-align: baseline !important; visibility: visible !important; white-space: normal !important; width: auto !important; zoom: 1 !important; z-index: auto !important; font-weight: 700 !important; background: 0px 0px !important;">GOLD
coin into a slot, the king could amplify sound: 1 coin - 1 fold 2 coins - 2 fold etc. The wizard persuaded the king to write down a number indicating the pleasure he experienced from various performances of the musicians. Later he presented these results: Coins Pleasure 0 10 1 15 2 20 3 25 Said the wizard, "Clearly, your majesty, we have found the fountain of pure joy. The more coins, the greater amplification, and the greater your pleasure." Which, if any, of these amounts do you recommend that the king use for his next by SalePlus" style="left: auto; opacity: 1; top: auto; box-sizing: border-box !important; border: 0px !important; bottom: auto !important; clip: auto !important; clear: none !important; display: inline-block !important; float: none !important; height: auto !important; margin: 0px 0px 0px 3px !important; max-height: none !important; max-width: none !important; min-height: 0px !important; min-width: 0px !important; overflow: visible !important; padding: 0px !important; position: static !important; right: auto !important; text-decoration: underline !important; text-transform: uppercase !important; -webkit-transform: none !important; transform: none !important; vertical-align: baseline !important; visibility: visible !important; white-space: normal !important; width: auto !important; zoom: 1 !important; z-index: auto !important; font-weight: 700 !important; background: 0px 0px !important;">INVESTMENT
in amplification (you should suggest more than one if appropriate). Explain your advice. a. 3 coins b. 100 coins c. 1000 coins d. 4 coins e. 10 coins