Ihave 2 shapes in my basket. together they have 7 sides. what shapes do i have?

It's impossible for you to have a shape with 1 or 2 sides. The shape with the smallest amount of sides possible is the triangle, which has 3 sides. That means your other shape has to be a quadrilateral, which has four sides. That means your two shapes have to be a triangle and a quadrilateral.

20000 as first it increases by 2500 then by 5000 so next it will increase by 10000