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frozen [14]
3 years ago
13

If f(x)=3x^2-7 , find f(4). Show all work

Mathematics
2 answers:
katrin2010 [14]3 years ago
4 0
Plug in all x's for 4.  4^2 = 16 --> 16x3=48 --> 48-7 = 41 
41 is the final answer
vagabundo [1.1K]3 years ago
4 0
<span>f(x)=3x</span>²<span>-7

Simply insert value of x, 4 into the equation then simplify
f(4)=3(4)</span>²-7
     =3(16)-7
     = 48 -7
     = 41
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