I need help with this pre calc assignment. can someone please check my answers? my friend tried to help me but I guess my school does the equations differently- like we still use f(x) instead of y? I'm super confused about this topic.

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

greater than one

step-by-step explanation:

your answer is b.

x = 33.9

y = 65.6

step-by-step explanation: