Answer
The answer and procedures of the exercise are attached in the images below.
Explanation  
Please consider the data provided by the exercise. If you have any question please write me back. All the exercises are solved in a 2 sheets with the formulas indications.  
 
        
             
        
        
        
Answer: No, 40 is a composite number. :)
Explanation:
 
        
             
        
        
        
A = $9.99, the amount needed after 1 year 
r = 0.018% = 0.00018, interest rate
n = 12, compoundings per year
t = 1, one year duration
Let P =  required balance at the beginning of the year.
Then

P(1 + 0.00018/12)¹² = 9.99
1.00018P = 9.99
P = $9.988 ≈ $9.99
Answer: $9.99
 
        
        
        
Men get treated better than women. Men are more superior. Womes Rights
        
             
        
        
        
Answer:
Cash A/c Dr $12,000
Account receivable A/c Dr $18,000
        To Hardware revenues A/c $30,000
(Being the sale of hardware is recorded)
Explanation:
The journal entry is shown below:
Cash A/c Dr $12,000
Account receivable A/c Dr $18,000
        To Hardware revenues A/c $30,000
(Being the sale of hardware is recorded)
Since the sale is taken which increase the current asset i.e cash account and the account receivable by $12,000 and $18,000 respectively so we debited it and the revenue is an income so we credited it