Solve the inequality
-4x - 15 > 5

x < - 5

Step-by-step explanation:

Given

- 4x - 15 > 5 ( add 15 to both sides )

- 4x > 20

Divide both sides by - 4, reversing the symbol as a result of dividing by a negative quantity

x < - 5

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:

answer:   y=2x-3

step-by-step explanation: