Question

The points on a section of an exam is given by the function f (x) , where x is the number of questions answered correctly in that section. If f (12) = 18 , then a test-taker receives 18 points for answering _____ questions in the section correctly.

Answer 1

The answer is "12"

Explanation:

Let f(x) be the function, where x specified in a certain section by the series of queries that have been addressed also as function.

`\to f(12)=18` it implies, that even a test the person gets 18 points to packed up x queries. Its right series of issues were also:

`\to f(x) = f(12)`

Therefore x = 12, The correct number of questions in the segment.