let f(x) =4x^4-6 evaluate f(3)

Raise 3 to the fourth power (giving you 81), multiply the result by 4, and subtract 6 from the result.

Surely you can do that on your own.

you should be familiar with the terminology of this topic

if f(x) = 4x^4 - 6
f(3) = 4(3^4) - 6
= 4(81) - 6
= 324-6
= 318 , (simply replace the x with 3 in the expression)

BTW, why did you label this question under the topic of "trig" ???

To evaluate f(3), substitute 3 for x in the function f(x) = 4x^4 - 6:

f(3) = 4(3)^4 - 6

First, simplify the exponent:

f(3) = 4(81) - 6

Now calculate the exponent:

f(3) = 324 - 6

Finally, perform the subtraction:

f(3) = 318

Therefore, f(3) = 318.