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stira [4]
3 years ago
11

Jamie purchased a DVD that was on sale for 15% off. The sales tax in her county is 5%. Let y represent the original price of the

DVD. Write an expression that can be used to determine the final cost of the DVD.
y − 0.15y
0.05(0.85y)
y − 0.85y + 0.05y
1.05(0.85y)
Mathematics
2 answers:
FromTheMoon [43]3 years ago
6 0
Since y is the original cost, let z represent the final cost. So, we set up the expression, (0.12y + y) - 0.03y = z. That shows first the sale, then the tax. From there, we simplify to get 1.12y - 0.03y = z, then simplify it more to get 1.09y = z. We take away the z, and get that the cost, which is 1.09, or 109%, or y (1.09y).
julsineya [31]3 years ago
5 0

Answer:

1.05(.85y)

Step-by-step explanation:

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