Write a function rule for the alea of a triangle whose height is 4 inches more than twice the length of its base.
What is the

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.

we would need a picture of the quadrilateral in order to answer the question. also, it seems that the question is missing some components.