In order for a pet to lose weight in a in a healthy manner, a veterinarian suggest and overweight large-breed do lise 2 pounds per week. if the expression x-2y represent this situation what must be true about the value of y

It is given in the question that,

In order for a pet to lose weight in a in a healthy manner, a veterinarian suggest and overweight large-breed do loss 2 pounds per week.

And the given expression is

The overweight large-breed lose 2 pounds per week .

So if x  is the initial weight , so after first week, weight losed

After 2 weeks, weight losed

So after y weeks, weight losed

So here, y represents the number of weeks .

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 answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3