The sale price for a computer is $450. the original price was first discounted by 25% and then was discounted an additional 20%.
1 answer:
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Answer:
1) -95.
2) 15.
3) The conference center is on floor 5.
Step-by-step explanation:
1) Evaluating gives
2) Substituting gives
3) After going 4 floors down, we are on level -4. After going 9 floors up to the desired room, we are on level -4+9=5. So the conference center is on floor 5.