The chart shows information gathered as part of the problem-solving process. Based on the chart, what percentage of students at the school need special diets? its 33 what is the percentage? 30 percent 40 percent 10 percent 20 percent

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:

the correct answer is the second option

(a) the volume of the cone is 20/3 in3

hence, option a is correct.