Ok, so based on the information, j is jewel's age 8 years ago. I will let n equal jewels age right now. The expression for her age right now is j+8=n
There is no actual explaining to do other than this:
Let j(j) be jewel's age 8 years ago(j+8). Write an expression for jewel's age now(n).
Answer: j+8=n
If all info is provided, answer: j+8
If my answer is incorrect, please let me know! Also, if this is not the information that is correct, please let me know. I could fix my math and next time you could possibly attach an image of the question to make it easier on us. Thanks!