Step 1: Assign variable for the unknown that we need to find.
Let x be the number of 350 ml bottles that you should bring from the supply room.
Step 2: Use the statement given to write a mathematical equation.
Given: 30 liter drum of fertilizer
Convert the liters to milliliters

"The owner of the plant nursery where you work tells you to fill 350 milliliter bottles from a 30 liter drum of fertilizer" means we need to find how many 350 ml are there in 30,000 ml.

Step 3: Simplify and round up to the next whole number.

Conclusion:
Eighty Six bottles with a capacity of 350 milliliter you should bring from the supply room to fill from a 30 liter drum of fertilizer!