Each month, Mr. and Mrs. Patel take their 4
children out to eat as a family. This month, they try Charlie's Chophouse. Charlie's Chophouse charges an
20
%
gratuity on parties of six or more. The subtotal, before gratuity, is
$
65.50
.

The Patel family budgets
$
75
each month for eating out at restaurants. Based on their total from Charlie's Chophouse (
20
%
gratuity, ignoring taxes), which statement best describes how their spending and their budget compare this month?

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:

step-by-step explanation: