Eventhough i solved it i don't understand how to fill the colors

Aparking lot is to be 400 feet wide and 370 feet deep. how many standard-sized cars fit in this lot considering a double-loaded (w4) two way traffic set up, an angle of 90° and a sw of 9’ 0’’? (do not consider handicapped parking spaces, and consider 15’ for turning aisles). show your work.

Find the slope of a line given the following two points

The graph shows the distance kerri drives on a trip. what is kerri's speed?