Which statements are true?

choose all answers that are correct.

a.
all rectangles are squares.

b.
all trapezoids are quadrilaterals.

c.
all rhombuses are parallelograms.

d.
all squares are parallelograms.

This is different from the first one can someone me

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60

What is the result of adding the system of equations? 2x+y=4 3x-y=6