Answer:
-320000
Step-by-step explanation:
Given
Lost Land = 80,000 acres yearly
Duration 4 years
Required
The total change
Represent the total change with y;
y is calculated as thus;
[tex]y = Lost\ Land * Duration[/tex]
[tex]y = -80,000 acres * 4[/tex]
[tex]y = -320000\ acres[/tex]
Hence, a total of 320000 acres were lost during the period