Answer:
15 ounces
Explanation:
0.75 tons is equal to 0.75 * 2000, or 1500, pounds (1 ton is 2000 pounds). Let x represent the number of ounces of fertilizer that should be applied. Set up a proportion:

Solving this for x, we have x = 15. So the landscaper should apply 15 ounces of fertilizer.