True or false 1. all parallelograms are squares.2. all squares are parallelograms. 3. all trapezoids are scalene.4. all squares are rhombuses. 5. all rhombuses are squares.6. all rectangles are squares. 7. all squares are rectangles.

1-2:Yes. But not all parallelograms are squares
3-false ! are plane figures.
4-True ! Every square is a rhombus
5-False , every rhombus is not a square.
6-7 : Yes, all Squares are rectangles, but not all rectangles are squares because it needs to have all equal sides.

Ithink the answer is $2.10

What’s the equation you are trying to solve to get x?