What is x/-4 = -20 how do i sole for x

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

The variable in a relation who’s value depends on the value of the independent variable is called what?