4 is what percent of 6 give me a step by step explanation

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.

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.

How many zeros does this polynomial function, y=(x-8)(x+3)^2