-6(-4/7)=
I need for a math assignment please help

What is (28 + 7 + 6 + 3) x 1/2 show your work

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 ?

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.