PLEASE PLEASE PLEASE HELP VERY IMPORTANT A pediatric speech therapist started her own practice in 2004. The function y = 3.2 x
+ 10.53 models the number of patients she treated each year, where x is the number
of years after 2004. The model was found using data for the years between 2004
and 2012. What does the model estimate as the number of patients in 2009? Round
to the nearest whole number. Is this interpolation or extrapolation?
a) 25; extrapolation
b) 27; interpolation
c) 29; interpolation
d) 27; extrapolation

desth

Step-by-step explanation:

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step-by-step explanation:

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: