Ineed with both questions :
part a:
a coffee shop uses 4 l of milk every day. if there are 15 l of milk in the fridge, after how many days will more milk need to be purchased? explain how you know

part b:
if only half as much milk is used each day, after how many days will more milk need to be purchased?

in mathematics, a constraint is a condition of an optimization problem that the solution must satisfy. there are several types of constraints—primarily equality constraints, inequality constraints, and integer constraints. the set of candidate solutions that satisfy all constraints is called the feasible set.

hoped i'm right lol

i believe it is 0.1m because the measurement of 30.4m limits how precise you can be

you can only be as precise as the least precise measurement