She is wrong because she did the square root of 25 multiplied by 2, she should have just done the square root of 50.
For the second part the square root of 50 is 7.07 which rounding would equal 7.1.
Hope this helps.(ﾉ◕ヮ◕)ﾉ*:･ﾟ✧
13,501 rounded to the nearest 10,000 is 10,000.
The answer is $432
Multiply 400 by .08 and you get 32, which you add to the original price.
