Answer:
A) if it is deemed a necessary good
Explanation:
Minors are not usually bound by a contract, and most of the time they can avoid liability under a contract. Minors can only sign a valid contract if it includes something that is essential for them. Medicines, food and medical services are the only things that are usually considered essential for a minor.
So the store has to prove that selling her the cell phone was a necessity, and something essential for her. It is possible to prove that it was a necessity, but it is something very difficult to do.
But the fact that the contract is not valid doesn't mean that Lydia can do whatever she wants. Her parents are responsible for returning the cell phone or since she lost it, they are responsible for paying it.
Answer:
Acitivy B should be crashed first by 2 days and Activity B has a crash cost per days of $25, it will be crashed for a total of $50.
Explanation:
activity A =
normal time (NT) = 5 days
Normal cost (NC) = $0
crash time (CT) = 3 days
Crash cost (CC) = $500
crash cost per day = [CC - NC]/[CT - NT] = $250/day
activity B:
normal time (NT) = 6 days
Normal cost (NC) = $0
crash time (CT) = 4 days
Crash cost (CC) = $50
crash cost per day = [CC - NC]/[CT - NT] = $25/day
activity C:
normal time (NT) = 8 days
Normal cost (NC) = $0
crash time (CT) = 3 days
Crash cost (CC) = $1000
crash cost per day = [CC - NC]/[ CT- NT] = $200/day
The activity that takes the least cost to speed up is the first one to be crashed. from the computations, activity B takes the least cost to speed up, so the project manager should crash activity B first by 2 days.
Therefore, Acitivy B should be crashed first by 2 days and Activity B has a crash cost per days of $25, it will be crashed for a total of $50.