Answer:
x = 11
Step-by-step explanation:

and check:

+6 ; 45,51
+ evens; 40,52
X -2; -64, 128
+ reducing squares 63+1/4, 63 +13/36
Answer: 304
Step-by-step explanation: first you multiply 9, 3, and 12 which equals 324. Then you subtract 20 from 324 and you get 304.
9 plates x 15 cups = 135 total cups.
135 cups x 10 chocolate balls = 1,350 total.
C. 51* I am pretty sure is it