I need help matching the equivalent expressions to these problems 5i(4-3i), -1(3+i), (1+2i)(-1+3i), (-4i)(5i)

What is the absolute value of -100000000000000?

The table below shows the number of free throw shots attempted and the number of shots made for the five starting players on the basketball team during practice. each player's goal is to make 80% of her shots.

The length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?