Determine whether quantities vary directly or inversely and find the constant of variation. a mill processes 27 tons of flour in 3 hours. how many tons of flour can the mill process in 8 hours if the rate of production stays the same? find constant of variation too.

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 formula of a slope:

we have the points (-2, 7) and (2, 3). substitute: