Final answer:
The rate at which Riya is applying mulch is x / 1,345 [m³/m²].
Step-by-step explanation:
The rate at which Riya is applying mulch can be calculated using the formula:
Rate = Amount of mulch / Area
Since the question provides the total area of the properties, we can use the given information to determine the rate at which Riya is applying mulch.
Let's assume Riya applies a total of x cubic meters of mulch.
Rate = x / 1,345 acres
So, the rate at which Riya is applying mulch is x / 1,345 [m³/m²].