She estimated 586 to 600 and 754 to 800
800 - 600 is 200
Tiffany: x/3 books
Brother: (4/9)x - 15 books
Sister: x/3 - x/9
Total: x/3 + (4/9)x - 15 + x/3 - x/9
The LCD here is 9. Mult. all terms by 9 and simplify the resulting expression:
3x + 4x - 135 + 3x - x = 7x + 3x - x - 135 = 9x - 135 books (answer)
Step-by-step explanation:
-4x(2x – 3) + 10x^2

All you have to do is multiply 6 1/2 times 1 3/13= 8, 8 feet is the answer