Please help me with these two I appreciate it and thank you

The answer is x = 48. And the explaination is in the pic.

Hello,

B. x  = 48°

Step-by-step explanation:

(x + 34) + (2x + 2) = 180 ⇔ 3x = 180 - 36 ⇔ x = 144/3

x = 48°

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18

7. d. 64

8. i. 32

9. c. 125

10. j. none of the above

11. d. 81

12. i. 216

13. e. none of the above

14. g. 240

15. e. none of the above

16. g. 32

17.   e. none of the above