Asked by Minny

Kmart has a 20% sale on all items. How much will you pay for a 40 inch flat-screen television with an original piece of $899?
Answered by Ms. Sue
0.8 * 899 = $_______

Answered by Minny
Can I please ask you got 0.8 Ms. Sue?
Answered by Ms. Sue
100% - 20% = 80% = 0.8

Answered by Ms. Sue
We could have multiplied 0.2 * 899 = 179.8 and then subtracted that from 899.

Answered by Minny
Oh okay thank you
Answered by Ms. Sue
You're welcome.
Answered by Minny
Ms. Sue I have another problem. "I am thinking of a number. When I double it and add 9, I get 25. What is the number?"
Isn't the answer 4? 4*4=16+9=25. Am I correct?
Answered by Ms. Sue
No.

When you double a number you multiply it by 2. You do not square it.

2x + 9 = 25
Answered by Minny
Oh so the answer is 2? Correct?
Answered by Ms. Sue
No.

Can you solve this equation?

2x + 9 = 25
Answered by Minny
Oh. The answer is 8?
Answered by Ms. Sue
Yes.
Answered by Minny
Thank you again.
Answered by Ms. Sue
You're very welcome.
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