Lets see,
6c to the second power is 36c because 6c times 6c is 36 c
And since the variables are different and only one number doesn't have a variable,
The answer would be, 36c-5d+8
Answer:
mean = adding all/ 10
mode = 125 because it is repeating most of the time
685/5 = 137
137 doesn't factor at all, so your factors are 5 and 137.