Final answer:
The final sale price of the model car on the third day, after being discounted by 5% each day from an original price of $40, was $34.30 to the nearest cent.
Step-by-step explanation:
The original price of the model car was $40. On the first day, it was discounted by 5%, and again on the second and third days. To find the final sale price on the third day, we calculate the price reduction for each day and then apply it to the original price successively.
First day price: $40 - (5% of $40) = $40 - ($40 × 0.05) = $40 - $2 = $38
Second day price: $38 - (5% of $38) = $38 - ($38 × 0.05) = $38 - $1.90 = $36.10
Third day price (final sale price): $36.10 - (5% of $36.10) = $36.10 - ($36.10 × 0.05) = $36.10 - $1.805 = $34.295, which when rounded to the nearest cent is $34.30.