D. They had no immunity to diseases brought by European explorers and settlers :D
Answer:
i gotta pit this and english cause i cant read this okay;)
Answer: One of the main reasons for the 1787 Convention was that the Articles of Confederation required the unanimous consent of all 13 states for the national government to take action. This system had proved unworkable, and the newly written Constitution sought to address this problem.
the answer is A
The total price including the discount and the tip is 
<u>Solution:</u>
Given:
Bill Amount = 
Coupon = 
So, Discount will be 
Discounted price = 
Mr. Oliver plans to give delivery driver a tip of 
Now, Bill (After reducing discount) =
Tip = 
Tip Amount = 
Now add that tip amount,
Total Price = 
Steps to find the discounted price:
Step 1: Consider the rate of discount
Step 2: Find the actual discount by multiplying the discount rate by the original amount
Step 3: Subtract the actual discount from the original amount to find the discounted price.