Answer:
C. [tex]| v -21 | \leq 0.15[/tex]
Step-by-step explanation:
Because the volume is either 0.15 more or 0.15 less than 21 ounces. [tex]| v - 21 |[/tex] indicate the difference between the volume and 21 and it has to be less than 0.15. Therefore answer C.
