3 5/9 would be your answer :)
Step-by-step explanation:
Total marbles = 1 + 3 + 5 + 6 = 15
Probability of not blue marble = 10 / 15 = 2 / 3
I haven't seen this video but the way I think of it is to compare the equation with a chemical balance. Both sides have equal weights and the pointer is at zero. To maintain the pointer at zero if we add/take away a weight from one side we have to do the same thing on the other side.
Answer: 
Step-by-step explanation:
The exponential function h, represented in the table, can be written as 
From table, at x=0, h(x) =10
Put theses values in equation,, we get

Also, for x= 1 , h(x) = 4, so put these values and a=10 in the equation , we get

Put value of a and b in the equation ,
→ Required equation.