Final answer:
To calculate the total earnings of Mark's business, multiply the number of lawns mowed, 16,607, by the cost per lawn, $39. The total earnings from mowing lawns last year amounted to $647,673.
Step-by-step explanation:
The question asks us to calculate the total earnings of Mark's lawn care business last year based on the number of lawns mowed and the cost to mow each lawn. To find the total earnings, we'll multiply the number of lawns mowed by the cost per lawn.
Total earnings = number of lawns × cost per lawn
The number of lawns mowed is 16,607 and the cost to mow each lawn is $39.
Total earnings = 16,607 × $39
Total earnings = $647,673
Therefore, Mark's business earned $647,673 last year from mowing lawns.