Answer:
Brian paid $1.13 for each pound of potatoes
Explanation:
Bought 5 pounds of carrots and each pound cost 0.89 dollars
Bought 3 pounds of potatoes and the cost of each pound is unknown
5(0.89) + 3p = 7.84
4.45 + 3p=7.84
subtract 4.45 from each side
3p=3.39
divide by 3
p=1.13
Brian paid $1.13 for each pound of potatoes