Linear Programming — Cumulative exam Answers

Consider the function represented by the equation x – y = 3. What is the equation written in function notation, with x as the independent variable?

What is the value of w in the solution to the following system of linear equations?

Brandi is downloading music for her MP3 player. Albums cost $10 each, and singles cost $1 each. She wants to purchase at least 5 singles but wants to spend no more than $25 total. If Brandi purchases x albums and y singles, which of the following is a possible combination of albums and singles that Brandi could purchase and stay within her guidelines?

What is the point of intersection when the system of equations below is graphed on the coordinate plane?

The constraints of a problem are listed below. What are the vertices of the feasible region?