Answer:
72.5 %
21.75/30=29/40
29/40 x 100= 72.5
1. (x + 7) (x + 8)
2. - (20x - 77)
3. 3 (2x +7)
4. 79x - 3
5. 4 (24x -1)
6. (4x - 5) (2x + 5)
7. (x-4) (x + 9)
8. 2 (x + 4) (x + 6)
See Explanation
Step-by-step explanation:
× =
()² = =