A right triangle has legs of 27 inches and 36 inches whose sides are changing. The short leg is decreasing by 2 in/sec and the long leg is growing at 8 in/sec. What is the rate of change of the hypotenuse? in/sec

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:

i believe that the answer is

b. y-1=-2(x-4)

hope this !