1. False, if x is equivalent to 2 then it would be x+2=2x
2. True, if x equals 3 then its 3+6=3x=9 so 9/3=3 therefore x=3
3. False, if x is equivalent to 1 then it’d be 1+4=5x
4. True, if 5+5=2x then 2x=10 which is correct
5. False, if x is 4 then 4 multiplied by 4 =16
Answer:
66 + 1 ( not fully shaded ) squares will be shaded.
66.67% region will be shaded
Step-by-step explanation:
It is given that Marks uses a grid to model percent equivalent of
.
Let us assume that Mark uses a model containing 100 grids.
Now, as the grids are divided into region equivalent to
i.e. it is divided into 3 parts.
Moreover, 2 out of those 3 parts will be shaded.
As, 
i.e.
=66.67%
So, it gives us that 66 squares in the grid will be fully shaded and one will not be fully shaded.
Hence, 66 + 1 ( not fully shaded ) squares will be shaded and in percent, 66.67% of the region will be shaded.
You have the following function:

Derivate implictly the previous expression, as follow:

Where you have used that:

Then, the implicit derivative of the given expression is:

Next, solve for y' as follow:

Answer:
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