100 people study one language at a college. Some people study French.
Some people study Spanish.
The rest of the people study German.
54 of the people are male.
20 of the 29 people who study Spanish are female.
31 people study German.
15 females study French.
Work out the number of males who study German,

d. 9

step-by-step explanation:

in the table given in the picture, x is the input of the function and f(x) is the output on the given input. in the given table, it can be read as the value of function at -3 is it's respective value of f(x) which is -9.

as we have to find the value of f(3), we will see that what is the value of output on input 3. we can see in the table that the output value at x=3 is 9.

so, option d is the correct answer ..