X=(-4,0)
y=(0,9)
hope this helps
I'm pretty sure you are asking for the value of b. Let's actually write it and then solve it:

Solving for b yields:

So,
b = 19.59. If you want the answer in simplified radical form, we can also do that:

So,
b = 8√6 = 19.59
90/3=30 30*(15)=450 450 is your answer.
Have fun but I think it is b and e