The area is (2x + 15) square centimeters.
the ratio of the shaded region to the unshaded region is 3 : 2.
write an algebraic expression for the area of the shaded region in terms of x.

Step-by-step explanation:

Let be the shaded area and be the unshaded area, then we know that

(1).  

and

(2).  

We solve for in the first equation and get:

and put this into the second equation and get:

i think the correct option is the second option.