Convert 2/3 to a decimal by long division

What is x and y (use substitution? ) 5x+3y=38 and y=3x+8?

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.

What is the binomial expansion of (2x-3)^5