Answer:
Yes, the fertilizer lived up to its promise
Explanation:
New fertilizer promised 50% increase in yield
Initial yield = 1200 pounds of squash
Expected yield with new fertilizer = 1200 + (1200×0.5) = 1200 + 600 = 1800 pounds
Actual yield = 1900 pounds
Since the actual yield surpassed the promise yield of the fertilizer, it lived up to its promise