Someone pls help, i will give brainliest

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

What are the relative frequencies to the nearest hundredth of the columns of the two-way table?

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.