Mr. williams invested $4000 in a bond with the yearly interest rate of 4% his total interest on the investment was $800 what was the length of the investment

Ineed with 14, 16, 28 and 36 me. we didn't go over them in class so i don't know what to do.

You paid $7.70 to the mail package that weighed 5.5 lb. right and solve any quetion to find the cost per pound ? ?

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.