Incorrect. Our third term in the sum was a little bit off, otherwise we would have obtained the correct answer.
Incorrect. Our numerator included the 6 combinations with the two disliked flavors, times the three possible toppings. However, we did not add three for the remaining three flavors if topped with chocolate chips. Our denominator was correct.
We inadvertently converted half a foot (0.5 ft) to 5 inches instead of 6 inches, which would have given us the correct answer.
From the last day of school, we overcounted the number of days remaining in June by one. We also carried over our incorrect answer from part two. Otherwise, we would have calculated the correct answer.
Incorrect. I forgot to square 5,280 in the denominator, which would have resulted in the correct answer. Furthermore, I did not conduct a reasonability check, which would have raised a red flag when considering that my answer was more than four times the surface area of the entire Earth, 1.96 million square miles.