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:
C
Step-by-step explanation:
Furniture is not counted as property that can be taxed.
Answer:
.
Step-by-step explanation:
0.85x + 375 > 450
The sales tax is 6.25% from $100