I’m stuck on this question if someone could help me I would highly appreciate:)

Describe the possible echelon forms of the standard matrix for a linear transformation t where t: set of real numbers is onto.

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

In the figure below, triangle rpq is similar to triangle rts. what is the distance between p and q? a. 24 b. 42 c.50 d. 54