SOLUTION: How do I start to get the function to this problem? f(x)=5x^2+6x-2 f(4)=?

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Question 690323: How do I start to get the function to this problem? f(x)=5x^2+6x-2 f(4)=?
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
you are given:
+f%28x%29=5x%5E2%2B6x-2
and you need to find f%284%29 which means you are given value for x which is 4
so, go to given function +f%28x%29=5x%5E2%2B6x-2 and replace x with 4

+f%284%29=5%2A4%5E2%2B6%2A4-2
+f%284%29=5%2A16%2B24-2
+f%284%29=80%2B24-2
+f%284%29=102
you got a point (4,102) that lies on +f%28x%29=5x%5E2%2B6x-2
check it on a graph: