My hypothesis: If Plant Food X is used on a tomato plant, then production rate will increase.
Experiment: Gather 2 tomato plants of the same age and height. Make two groups, an experimental group (a tomato plant with using Plant Food X) and a controlled group (a tomato plant without use of fertilizer).
For about one week, give both plants the same amount of water, humidity, sunlight, and air temperature. after a week measure the number and height of the tomatoes produced. Once the week is over, Gather the information in a table and compare to hypothesis.