Jack paid $ 23000 for the ring.
<u>Solution:</u>
Given that, Jack Matthew bought a new diamond ring for $20,000
Sales tax is 5% with a 10% excise tax
<em><u>To find: total price including taxes</u></em>
Given that sales tax is 5% of 20,000

Also given that excise tax is 10%

<em>Total price = cost price + sales tax + excise tax</em>
Total price = 20,000 + 1000 + 2000
Total price = 23000
Hence, jack paid $ 23000 for the ring.
The graph of the given function, y = 2eˣ, is given below
<h3>Graph of a function </h3>
From the question, we are to determine the graph of the given function
The given function is
y = 2eˣ
The graph of y = 2eˣ is shown below
Learn more on Graph of a function here: brainly.com/question/16823382
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