Final answer:
Estela has enough soil for 8 tomato plants after using 3 1/2 ft³ in her garden out of her initial 10 ft³ of soil.
Step-by-step explanation:
The subject of the question is Mathematics and it's at the middle school level. Estela initially has 10 ft³ of soil. She uses 3 1/2 ft³ in her garden which means she has 10 - 3.5 = 6.5 ft³ left for her tomato plants. If each tomato plant requires 3/4 ft³ of soil. We would then divide the remaining soil by the amount needed for each plant: 6.5 ÷ 3/4 = 8.66, which we would round down to 8 since she can't plant a fraction of a tomato plant.
Learn more about Division in word problems