Which of the following is a real-word problem that could be solved by calculating the sum 18+(-5).
A. Jackson has $18 in his wallet. He puts in another $5 that his mom gives him. How much money does he have in his wallet?
B. In the morning the temperature at Jackson's house was 18°F. By noon it was 5 degrees warmer. What is the temperature at Jackson's house now?
C. Jackson buys a meal for his family for $18. The next day his friend pays him back the $5 that he borrowed last week. How has the amount of money Jackson has changed over the course of these two transactions?
D. Jackson is on the second floor, which is 18 feet above ground. He then goes down some stairs, descending 5feet. How many feet above ground is he now?
A. Jackson has $18 in his wallet. He puts in another $5 that his mom gives him. How much money does he have in his wallet?
The real-word problem that could be solved by calculating the sum 18 + (-5) is:
D. Jackson is on the second floor, which is 18 feet above ground. He then goes down some stairs, descending 5 feet. How many feet above ground is he now?
The real-word problem that can be solved by calculating the sum 18 + (-5) is option D: "Jackson is on the second floor, which is 18 feet above the ground. He then goes down some stairs, descending 5 feet. How many feet above the ground is he now?"
To solve this problem, we need to calculate the sum of 18 and -5. The number 18 represents the height above the ground, and -5 represents the distance Jackson descends. Adding -5 is the same as subtracting 5, so 18 + (-5) is equal to 18 - 5.
Therefore, Jackson is now 13 feet above the ground after descending the stairs.