Answer:
The median is NOT the same thing as a quartile.
The median is a measure of center.
Given:
The function is
.
To find:
The function
.
Solution:
We have,

Substitute f(x)=y.

Interchange x and y.

Divide both sides by 3.

Taking power 4 on both sides.

Subtract 7 from both sides.


Substitute
.

Therefore, the correct option is C.
Answer:
3/20 or 0.15 or 15%
Step-by-step explanation:
Since 3 red marbles were drawn out of 20 outcomes, the probability the next marble will be red is 3/20. If you convert it to a decimal it will be 0.15, and if you convert it to a percent it will be 15%.