I need help on 4 and 6 please help me. Don’t put a link.

If a boat travels 3 miles in 1.5 hours how far will it travel in 1 hour

What is the definition of exponential decay?

The rumpart family is building a new room onto their house. the width of the new room will be 16 feet. the length of the room will be 4% greater than the width. write an expression to find the length of the new room. what will be the area of this new room?