Fill in the area of each part and then give the entire area.
Area as a product
Area as a sum (what tiles are there...start with the x squared tiles)
What can he do to both sides of the equation to get x alone?
Solve for x.
Solve for x.
Use the graph to help if necessary
What is the slope of the line?
What is the y-intercept of her line written as an ordered pair?
What is the equation of her line
After how many months will the sales of both calculators be equal?