add 4n and 5n, which is 9. 9n=-9, and if u divide both sides by nine, n=-1
He buys 30 bottles which each costs 3 dollars. So 30 times 3 means he pays 90 dollars. Plus the 25 dollar handling fee which is 115. However the competing supplier is 4 dollars every bottle for the pint bottle. So if he bought 30 times 4 he would pay 120. That is without the handling money. So thats why he should stay with his
Total is just add
n+16 is total of 16 and n
It is 0.575000. All you have to do is divide the numerator by the denominator.
