All of the following measure volume except milligram liter milliliter deciliter

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.

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.

Someone me i need with this stuff