It sucks that points have to be used in order to post questions.
Openstudy - the company that merged into Brainly - was much better.
Anyway, I think that the answer to this question is A. I'm not sure, though.
Answer:
if 
Step-by-step explanation:
Given --> 
Substitute
into the equation and solve for
:




So, when 
Answer:
3.5
Step-by-step explanation:
Ok the whole area is 3.75 sq m:
2.5x = 3.75
the height is 1.5 meters