Final answer:
To find Taryn's fee per lawn, divide the total amount earned by the number of lawns mowed.
Step-by-step explanation:
To find the amount Taryn charges to mow a lawn, you can use the given information about Taryn's earnings. Let's assume that Taryn mowed 'n' lawns in the past week and earned a total of '$m'. Since Taryn charges a flat fee per lawn, the amount earned is directly proportional to the number of lawns mowed.
In this scenario, we have the equation: m = n * Taryn's fee per lawn. Solving for Taryn's fee per lawn, we get: Taryn's fee per lawn = m / n.
Therefore, Taryn charges $m/n per lawn.