<u>Answer:
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When you buy 2 , 3 and 4 tees , price you pay are 10.33 unit price , 13 unit price and 15.667 unit price respectively.
<u>Solution:
</u>
Information provided in the question seems to be less . so assuming following two things.
1)Given function p = n + 5 do not include shipping cost as shipping cost is also dependent on number of tees.
2)If shipping charges for 3 tees is 5 , then shipping charges of 1 tee is 
When you buy 2 tees , n = 2
 Price = p = n+5 = 2+5 = 7
 Shipping charges =(  ) x 2 =
 ) x 2 =  
 So total price you pay for two tees = 7 + ( ) = 7 + 3.3333 = 10.3333 unit price.
) = 7 + 3.3333 = 10.3333 unit price.
When you buy three tees , n = 3  
 Price = p = n+5 = 3+5 = 8
 Shipping charges =(  ) x 3 = 5
 ) x 3 = 5
 So total price you pay for two tees = 8 + 5 = 13 unit price.
When you buy four tees, n = 4  
 Price = p = n+5 = 4+5 = 9
Shipping charges =(  ) x 4 =
 ) x 4 = 
So total price you pay for two tees = 9 + ( ) = 47/3 = 15.667 unit price.
) = 47/3 = 15.667 unit price.
Hence when you buy 2 , 3 and 4 tees , price you pay are 10.33 unit price , 13 unit price and 15.667 unit price respectively.