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Step-by-step explanation:
..................
Answer:
Answer is D hope this helps
Step-by-step explanation:
0.9x = 450
x = 450/0.9
x = 500
Answer = 500

First we must apply the Quotient rule that states,

This means that our derivative becomes,

Now we need to calculate
and 


From here the new equation looks like,

And that is the final result.
Hope this helps.
r3t40
This would be SAS. If that’s wrong I’m sorry but it’s the only thing that makes sense, the dashes indicate they are the same and then the circle at the point also indicates that they’re the same so you have two sides and one angle that are the same, so it should be SAS.