May someone please explain GCF and distributive property to me? I know how to do them by themselves but not together

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Asap the total attendance for all of a baseball league in 2012 was about 7.5×107 fans, while the attendance for the tornadoes in 2012 was about 1.5×106 fans. about how many times more was the attendance for the entire baseball league than the attendance for just the tornadoes? 50 times more 10 times more 2 times more 5 times more

Aline passes through 3,7 and 6,9 what equation represents the line