Answer: I can't see the image
In the second step while distributing she made a mistake
It should have been
2x^2 -4x -6x +18 = 9x - 27
So answer should be
She did not use the distributive property correctly
If you meant to put " what is the greatest product by a 1 digit number multiplied by a one digit number thw answer is 9 x 9 = 81
The easiest way is if it doesn't need to be simplified. Multiply -2.105 by

. You get the fraction

. While this is technically the answer, you can simplify this down to

. Because 421 is a prime number, this can not be simplified any further. Therefore, the solution is

.

.
Answer:
$4000
Step-by-step explanation:
Expenditure= 6*20000/5
=24000
Saving= 24000-20000
=$4000