translation Algebraic Expressions

1.) 7 is added to k
2.) 4 less than z
3.) 9 minus x
4.) product of 4 and c
5.) Take away 9 from z
6.) sum of 9 and s
7.) x minus 4
8.) 9 is subtracted from x
9.) f is added to 8
10.) d divided by 4
need a big help