Cross out the letter next to each correct answer. When you finish, the answer to the title question will remain.
In Exercises 1-8, use the distributive property to write an equivalent expresssion.
1. \( 7(x+y) \)
2. \( 4(n+9) \)
3. \( 5(11+2 y) \)
4. \( n(x+y) \)
5. \( x(x+8 y) \)
6. \( (9 n+30) 2 \)
7. \( 7(4 x+3 y+1) \)
8. \( y(8 x+5 y+6) \)
In Exercises 9-16, factor the expression.
10. \( 2 a+18 \)