Step-by-step explanation:
If everything is kept in terms of x then:
For part A the general area would just be side times side.
Here it would be (30x)(4x)
=[tex]120x^{2}[/tex]
For part B since you have 5 sections divide the long side by 5.
[tex]\frac{30x}{5} =6x[/tex]
Then multiply by the other side of the rectangle to find the area of one section.
6x(4x)=[tex]24x^{2}[/tex]
Alternatively you could just divide the large area by 5 to get the area of one section.
[tex]\frac{120x^{2} }{5}=24x^{2}[/tex]
