g (x) = ax2 +24 For the function g defined above or is a constant and g(4) =8 . What is the value of g(-4) ?

A 8
B -1
C -8

Correct Answer: 8

g(x) = ax2 + 24 and g(4)  = 8.'. a(4)2  + 24  = 8⇒16a + 24 = 8⇒16a  = 8 - 24 = 16.'. a  = - 1Now, g( - 4)  = a( - 4)2  + 24 = 16a  + 24  = 16 ( - 1)  + 24  = - 16  + 24 = 8 
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