Answer:

Step-by-step explanation:
Given


Required
Find y when 
We have:

Express as equation

Solve for k

When 


When
, we have:



Answer:
Answer is D. 1.97
I Hope this answer helped you.
Answer:
Option A. 
Step-by-step explanation:
we know that
The combined area of the 3 windowpanes and frame is equal to

using a graphing tool to solve the quadratic equation
The solution is 
see the attached figure
If a pack of paper costs 3.75 including tax, and there is a $20 budget, then the equation to find out the answer would be 3.75p is greater or equal to $20. So the answer would be B. 3.75 would be multiplied by the tax and then applied up to $20.