Answer:
Area = [tex]12-\frac{4}{35}x[/tex]
Step-by-step explanation:
Length of the given rectangle 'l' = (15 - [tex]\frac{1}{7}x[/tex])
Width of the given rectangle 'w' = [tex]\frac{4}{5}[/tex]
Area of the rectangle = lw
= [tex]\frac{4}{5}(15-\frac{1}{7}x)[/tex]
= [tex]\frac{4\times 15}{5}-\frac{4}{5}\times \frac{1}{7}x[/tex]
= [tex]12-\frac{4}{35}x[/tex]
Therefore, expression that defines the area of the given rectangle will be,
Area = [tex]12-\frac{4}{35}x[/tex]