The population of a rare species of fish, in thousands, is modeled by the linear function f(t)= 137.618 +2.514t where t represents the time, in years, since 2018. Use this linear model
to estimate the population of fish in the year 2035.

175.328

Step-by-step explanation:

between 2018 and 2035 was 15 years

f(15)=137.618+2.514(15)

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: