Write an algebraic expression for the phrases. Match the phrase to the correct expression.

the product of 5 and y ????
The sum of 8 times a number y and 3 ????
Bobby's age is 7 less than his sister's age, a ????
1. 8y + 3
2. a - 7
3. 5y

1. 8y + 3

2. 5y
3. a - 7