Answer:
Third option
O 100 cm
1m
Step-by-step explanation:

NO they are not proportional
3/7 = .4285714
6/9 = .66666
11 5/6 as a decimal would be 11.83. Then, rounding that to the nearest whole number would be 12. Giving you an answer of 12.
Time of the 20 to the x then get 420
"The quotient of 8 and the sum of 3 and m" can be written as:
8/(3 + m)