Which situation cannot be represented by x + 4.5 = 8?
A. Stephen plans to walk 8 miles this weekend. So far he has walked 4.5 miles and plans to walk the rest later today. What is x, the distance Stephen needs to walk to reach his goal?
B. Maddy needs 4.5 more points to get on the leaderboard of her video game. She currently has 8 points. What is x, the number of points Maddy needs to get on the leaderboard?
C. Brianna spent $8 at the grocery store. She bought a case of Dr. Pepper for $4.50 and a bag of chips. What is x, the cost of the bag of chips?
D. A recipe calls for 8 cups of flour. Juan has already put in 4.5 cups. What is x, the number of cups of flour Juan still needs to put in?