Help i'm not sure which is correct Alexander can earn money for the cans he recycles. Which of the following statements describes the variables in this situation correctly?

1: The number of cans recycled is the independent variable because it affects the amount of money earned.
2:The number of cans recycled is the dependent variable because it affects the amount of money earned.
3:The amount of money earned is the independent variable because it affects the number of cans recycled.
4:The amount of money earned is the dependent variable because it affects the number of cans recycled.

1: The number of cans recycled is the independent variable because it affects the amount of money earned.

Step-by-step explanation:

Alexander can earn money for the cans he recycles. Which of the following statements describes the variables in this situation correctly ?  The number of cans recycled is the independent variable because it affects the amount of money earned.

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:

mxb67

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