Answer:
the constant proportionality is 2.5
 
        
                    
             
        
        
        
Here's li nk to the answer:
nk to the answer:
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Answer:
The student added the discount instead of subtracting the discount.
They also did not calculate the tax correctly.
Step-by-step explanation:
Original price is 499
Discount = original price * percent off
Discount = 499 * .18
                =89.82
The sale price = original price minus the discount
sale price = 499-89.82
sale price = 409.18
Sales tax = sale price * tax rate
                 = 409.18 * 8.875%
                 =409.18*.08875
                  =36.314725
Rounding to the nearest cent
                      36.31
Final cost = sale price + sales tax
                   =409.18+36.31
                    445.49
The student added the discount instead of subtracting the discount.
They also did not calculate the tax correctly.