If f of x is equal to 3 x squared and g of x is equal to 4 x cubed plus 1 , what is the degree of open paren f circ g close paren times x ?

The composition is (f∘g)(x)=f(g(x))=3(4x³+1)². The highest-power term comes from 3(4x³)²=48x⁶, so the degree is 6. The correct choice is C, 6.

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