Answer:
There could be a customer with the same name or surname. It could cause a mess in your database if the customer wants payback for something and there will be the customer with the same name. I think that the primary key should be consisted of unique Customer's ID number.
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Explanation:
Asked on brainley already
Answer:
The expected return from a portfolio consisting of 25% of stock A and 75% of stock B is 18.5%
Explanation:
Return on portfolio=Return of security A *Weight of security A+Return of security B *Weight of security B
Return of security A=14%
Return of security B=20%
Weight of security A=25%
Weight of security B=75%
Return on portfolio = 14
%
∗ 25
/100 + 20% ∗ 75
/100
Return on portfolio = <u>18.5
%</u>
Keep track of your money and keep track of your credit score and maintain it for a while and also focus on what you spend your money on
