t=45min
d=4km
45min/60min = 0.75 hours
v=d/t
v=4km/0.75hours
v=5.33km/hour. So the answer is B. 45 minutes.
let's notice, this is a Cube, namely all equal sides, and mind you it has 6 sides, Check the picture below.

Answer:
It is an enlargement because k=3 is larger than 1. Anything that equals less than one (ex. k=0.25) would be a reduction.
Step-by-step explanation:
Answer:
Exponential Decay -
A quantity is subject to exponential decay if it decreases at a rate proportional to its current value.
Step-by-step explanation:
Hope this answered your question ^^
Answer:
The correct answer is Never