Ineed to know the steps to do two step equations

Select the correct answer from the drop-down menu. this graph represents the inequality x+2< 4,2x> 3,x+6< 12,2x> 12

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?

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.