Simplify both brackets, this equals 22 + 10x - 17 + 5x
Simplify further and you get 15x + 5
keeping in mind that anything raised at the 0 power, is 1, with the sole exception of 0 itself.
The correct answer is the second option: plus or minus square root of 20
Hope this helped :)
Answer:
salma needs 6boxes of cookies
Well...
The difference between 7 and 4 is 3.
That difference cost $6.75.
Each box cost $6.75/3=$2.25
Good luck!
M.