Rose went on a shopping trip to Richmond. She purchased a calculator originally priced at $100 but discounted 80%. If sales tax in Richmond is 15%, what was the total cost? $

The total cost is .

Step-by-step explanation:

Given: Original price of calculator is , discount is and the sales tax is .

To find: The total cost

Solution:

We have,

Original price of calculator

Discount

Sales tax

Now, first we need to find the cost after applying the discount.

So, discount

Therefore, the cost after applying the discount

Now, we have to find the sales tax. Therefore,

Sales tax

So, the total cost is .

Hence, the total cost is .

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what is the graph

step-by-step explanation: