PLS HELP ASAP!

which of the follwing expressions is equvialent to:

*image below*

A

Step-by-step explanation:

simplify equation A

then you will get same as the expression above

4 packs of water and 7 packs of candy bars

step-by-step explanation:

35x4=140

140/20=7

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: