Final answer:
The unit price for one pound of limestone chips is $0.64 when you divide the total cost of the bag by its weight in pounds and round to the nearest cent.
Step-by-step explanation:
To calculate the unit price for one pound of limestone chips, you need to divide the total price of the bag by the weight of the bag in pounds. The gardening store is selling a 50-lb bag of limestone chips for $32.23, so you would perform the following calculation: $32.23 ÷ 50 lbs = $0.6446 per pound. When rounding to the nearest cent, the unit price would be $0.64 per pound.