Answer:
Both the equation and its inverse are functions.
Step-by-step explanation:
In order to solve this problem lets first find the inverse of this function. This is done below:

We first swap x and y.

We now isolate y.

Functions are relations between two groups of numbers, in such a way that one number on the input group must generate a singular answer from the output group. This holds true for both f(x) and its inverse, therefore both are functions.
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<h2>Solution :</h2>
Area = 30 units²
Base = 5 units
Height = ? = Let it be -> x
Area (formula) = base×height = x×5 units= 30 units²
= x= 30/5 = 6 units
<h2>Thus , the height = 6 units</h2>
Percentage is the same as a fraction over 100, where the number 100 represents a 'whole'.
Therefore, if 65% are male, it means if there were 100 runners in total, 65 of them would be male, so your fraction would be 65/100.
However, you can simplify this fraction as both 65 and 100 have common factors. So you keep dividing both numbers by its factors until there are no more common factors left. This will leave you with 13/20.
Therefore your final answer is 13/20.