How do you Rewrite f(x) = −(x + 3)2 − 1 from vertex form to standard form?
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Let x be the original price.
Discount percentage = 40%
Price after discount = $3
So, x - = 3
= 3
= 3
x = 5
Hence, the equation that would allow us to find the original price is 0.6x = 3.