<em>3 m - 4 n - 8 in sum we will use addition symbol i.e plus so ( 3 m )+ ( -4 n ) + ( - 8) answer... as we know that + . - = - so by opening brackets we will again have the given value i.e 3m - 4n - 8..</em>
Step-by-step explanation: The question tells us that the population decreases by 1/4 every single year. That means, since 1/4 equals .25, the population decreases by 25% every year :)
