Substituting the numbers given in the problem statement into the formula, we get ...
... dollars made by ABC Lawn Co. = 20·333 +25·444 -10 = 6660 +11100 -10 = 17750
From that effort, the lawn company makes $17,750.
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Perhaps you intend that the company mowed 3 lawns and raked 4 gardens. In that case the amount of money made was ...
... 20·3 +25·4 -10 = 60 +100 -10 = 150 . . . dollars
