Final answer:
The algebraic expression for 'One more than the product of 21 and Gail's savings' is 21g + 1.
Step-by-step explanation:
The algebraic expression for 'One more than the product of 21 and Gail's savings' is 21g + 1.
To explain further, the product of 21 and Gail's savings is represented by 21g, and adding 1 to that gives us the final expression.