32 points for solving this problem for me

need on number 4! been trying to solve it but im just so confuse! also its due tomorrow so guys me

What is the answer to |-2x-5|-|-4+8| and x=7

Brent wants to know what is 5 x 1/2

Ariel is working at a meat packing plant for 5 nights a week. her regular wage is $11 an hour. she earns tine and a half for any overtime hours. this week she worked 9 hours of over time .how much will ariel earn for overtime this week ?