Pls asap me with 7, 8, 9, 10, and 11. a and b (lots and lots of ! ) (must show )

7.) (3 + 5)² - 4(6) - 8 ÷ 2
64 - 24 - 4
Final answer is 36, so B is correct.

8.) 42 - 6²/3
42 - 36/3
Final answer is 30, which is C.

9.) 4j + 6k + 8j + 10k
12j + 16j
4(3j + 4k) is the answer, so C. 

10.) m³ - 2n²
m = - 6 and n = 4
-6³ - 2(4)²
-248 is the final answer, A. 

11.) 
A.
16p + 8q + 12p + 6q
28p + 14q 
14(2p + q)

B. 16p + 8q + 12p + 6q
p = 6 and q = -3

16(6) + 8(-3) + 12(6) + 6(-3)
Final answer is 126

Ithink its 126 hope its