Question

Jessica purchased a DVD that was on sale for 12% off. The sales tax in her county is 3%. Let y represent the original price of the DVD. Write an expression that can be used to determine the final cost of the DVD.

Answer 1

Please help

Answer 2

DVD original price: \(x\)

DVD discount price: \(x\color{red}{-0.12x}\)
`because 12% of anything is the same thing multiplied by 0.12*`

DVD discounted price PLUS tax: \(x-0.12x+\color{red}{0.03(0.12x)}\)
`because you are calculating 3% of the discounted price for tax`

Answer 3

*this is because anything with % is out of 100
example: 83% would also be\[\frac{83}{100}\]If you divide this on a calculator you get \(0.83\), so it's basically moving the decimal point back two digits

Answer 4

@josiah Are you okay with this so far?
If you're confused, feel free to tell me