Astore sells 10-ounce bottles of apple juice for $0.40 each and 16-ounce bottles for $0.56 each. how much money can you save by buying 80 ounces of juice in 16-ounce bottles rather than in 10-ounce bottles? you can save $ by buying 16-ounce bottles instead of 10-ounce bottles.

You want to buy 80 ounces of juice.
1- If you decide to buy the 10-ounce bottles:
Number of bottles needed = 80/10 = 8 bottles
each bottle costs $0.4
total cost = 0.4*8 = $3.2

2- If you decide to buy the 16-ounce bottles:
Number of bottles needed = 80/16 = 5 bottles
each bottle costs $0.56
total cost = 0.56*5 =$2.8

Therefore, if you go for the 16-ounce bottles instead of the 10-ounce bottles, you will save:
3.2-2.8 = $0.4

If you need an equation, it would be y=2x+8, y would be how long it grew, x being weeks.if you need how long he was asleep, it would be 4 weeks if he started with no beard, the equation would be x=8÷2if he did have a beard before hand, the equation would be 2w+x=8