saher79 saher79 25-01-2019 Mathematics contestada Nora took 8 bottles of water to a picnic. Of those bottles of water, she and her friends opened a certain number of bottles, b. Part A: What expression can be used to determine the number of unopened bottles at the end of the picnic? Part B: If Nora and her friends opened 6 bottles, how many unopened bottles are left at the end of the picnic?