While I cannot answer all of these, I can certainly help you out! Unit rates are quite simple given the total amount of something and the total cost. All you need to do is divide the cost by the amount of items (units) to find the unit rate. For example, let’s try number 17.
For 24 bottles, you spend $4.99
to solve, divide 4.99 by 24.
(4.99/24=0.207916666666667)
Rounded to the nearest hundredth, this is about 21 cents per bottle.