The answer is d because 2+y is the sum of 2 and y and then you multiply it by 5
D.
Explanation
I saw this answer in a different question today.
Moreover, 1n + 0.25n = 1.25n
Solid line with shading above (bc of the >)
I got 6 units^2. So the answer is the second choice. ab/2 = 3*4/2 = 6.
It tells you how temperature varies with pressure :)