Answer:



Step-by-step explanation:
Given
The attached triangle
Required
Find h, x and y
Let the base of the triangle be 15.
So, the area is:




Let the base of the triangle be 25.
So, the area is:



Substitute 

Solve for h



Considering the smallest triangle

So:


This gives:


Take square roots


Solving for y




Answer:
X = $75
Step-by-step explanation:
X=total cost
x* (1/3) =$25
multiply by 3 on both sides
x=$75
Yes 7.5 is clearly the answer here
Formula used: cos(x) = 
Hope this helped!
~Just a girl in love with Shawn Mendes
Note --> As you're writing 'zeroes' , I assume there is a typing mistake and you've given a Quadratic equation in the question

Hence , the roots are 1/2 and -6
The graph attached confirms the same ,
Hope it helps you :)