10/5 =2
7-2+4^2 =5+16=21
2*21=42
Answer: 
<u>Step-by-step explanation:</u>

Answer:
first setup your problem. it should look like this :
Answer:
the area after 6 years is 3,473 km^2
Step-by-step explanation:
The computation of the area after 6 years is as follows:
= Area × (1 - decreased percentage)^number of years
= 4,800 km^2 × (1 - 5.25%)^6
= 4,800 km^2 × 0.9475^6
= 3,473 km^2
Hence, the area after 6 years is 3,473 km^2