Question 1:

select CUS_FNAME as `First Name`, CUS_LNAME as `Last Name`, CUS_INITIAL as `Customer Initial` 
from CUSTOMER 
where CUS_AREACODE = '615' and CUS_BALANCE != '0';

Question 2:

select P_DESCRIPT as `Product Description` , P_PRICE as `Price`
from PRODUCT
where P_QOH < 15;

Question 3:

select P_CODE as `Product Code`, P_DESCRIPT as `Product Description`, (P_PRICE * (1 - P_DISCOUNT)) as `Discounted Price`
from PRODUCT
where P_PRICE > 100;