Perform the following:

1. translate the words into a mathematical expression: n more than 8.
2. translate the words into a mathematical expression: the product of 4 and a number g.
3. translate the words into a mathematical expression: the difference of 5 and twice x.
4. translate the words into a mathematical expression: the quotient of 6 and x.
5. translate the words into a mathematical expression: the sum of 3 times m and 9.
6. translate the words into a mathematical expression: 7 plus the quantity of 8 minus 6.
7. evaluate 8 - n if n = 3. 8. simplify (20 - 2) ÷ 9.
9. evaluate 3x + 1 if x = 4.