Area of the parallelogram

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

What is the ordered pair of m’ after point m (5, 6) is rotated 90° counterclockwise?

Me with this assignment ! i only partially understand, so explain. also it's a work sample. at the championship bike race, steve and paula were fighting for first place. steve was 175 feet ahead of paula and had only 300 feet left to go. he was very tired and was going only 9 feet per second. paula was desperate to catch up and was going 15 feet per second. who won the bike race and by how far did she/he win?