Which of the following is equivalent to (5×103)+(4×106)?

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.)

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)