What do s the constant proportionality in the equation y= 5x

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.

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

Which expression is equivalent to 3^3 + 2^2?