Translate each verbal expression into an algebraic expression.

10. Seven increased by four times a
11. Seven times a increased by four a
12. Twelve times a minus four
13.
Fourteen times the difference of a and four
14. Twice a, increased by b
15. Twice the sum of a increased by b
16. Five less than a third of a number
17. The quotient of three times a number and
eight.
18. The quotient of the product of a and b and
the sum of a and b.