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?
Initially, Jackson has $0 because he borrowed $5 from his friend. Then he pays $18 for a meal for his family, leaving him with $0 - $18 = -$18.
Finally, his friend pays him back the $5 he borrowed, increasing his balance from -$18 to -$18 + $5 = -$13.
In total, the amount of money Jackson had has changed by $0 - $18 + $5 = -$13. Answer: \boxed{-\$13}.
To determine how the amount of money Jackson has changed over the course of these two transactions, let's break it down step-by-step:
1. Jackson buys a meal for his family for $18.
- Jackson's money decreases by $18.
2. Jackson's friend pays him back the $5 that he borrowed last week.
- Jackson's money increases by $5.
Therefore, the net change in the amount of money Jackson has is -$18 + $5 = -$13.
Overall, the amount of money Jackson has decreased by $13 over the course of these two transactions.
To determine how the amount of money Jackson has changed, we need to calculate the difference between the initial amount of money he had and the final amount of money he has after the transactions.
1. Initial Amount: Jackson had $0, assuming he had no money before these transactions.
2. Transaction 1: Jackson buys a meal for his family for $18, which means he spent $18.
- Amount spent: $18
- New balance: $0 - $18 = -$18 (since he spent more money than he had)
3. Transaction 2: Jackson's friend pays him back the $5 he borrowed last week, which means he received $5.
- Amount received: $5
- New balance: -$18 + $5 = -$13
So, the amount of money Jackson has changed from $0 to -$13 over the course of these two transactions.