Solve for y
-3y+4=-17

7

Step-by-step explanation:

-3y+4= -17

-3y= -21

y= 7

y=7

An explanation is below!

Step-by-step explanation:

Subtract 4 from both sides:

-3y+4-4=-17-4

Simplify:

-3y=-21

Divide both sides by -3

-3y/-3 = -21/-3

Simplify:

y=7

3201

step-by-step explanation:

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: