Find the simple interest on a $2350 principal deposited for six years at a rate of 4.77%

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.

How to do this , and can some one explain

Describe a situation where it would be beneficial to round decimals to the nearest dollar. explain why you would use rounding in that situation.