Answer:
Y = Your age S = Sister's age
Y = 2S - 3
Step-by-step explanation:
An expression for your age in terms of your sister's age is 2s - 3.
An expression is a combination of symbols and numbers that were made according to rules and they are finite. An example of an expression is x + 4.
The age of my sister = s
Your age = 2s - 3
To learn more about expressions, please check: https://brainly.com/question/25875552