Answer:
& 
Step-by-step explanation:
I'm sure you are familiar with the product rule,
If y = u*v => dy/dx = u * dv/dx + v * dy/dx <----- product rule
In this case:

Now remember the sum rule:

For this second bit we apply the chain rule:

If we substitute these values back into the expression...
...we get the following:

The rest is just pure simplification:

Now let's equate this to equal 8 for the second bit and solve for x:

Answer:
12
Step-by-step explanation:
12 is the most number in the equation
To write in expanded form is to simply mean writing each number into its place value.
Answer:
20 percent
Step-by-step explanation:
100(%) (all 5 balls) ÷ 5 = 20(%)
Multiplication goes first 0.8x1.5=1.2
4+1.2-3= 2.2