The input value of x would be 3 in other to obtain an output value of 10 from f(x) = x + 7
The question is incomplete as the required output value isn't given.
However, we could give an hypothetical value of the output as 10
Therefore, we could determine the input that would give an output value of 10 for the function.
f(x) = x + 7
The input value to obtain an output value of 10 will can be obtained by solving for the value of x thus :
The output value = f(x)
Hence, f(x) = 10
Hence,
10 = x + 7
Subtracting 7 from both sides in other to isolate x ;
10 - 7 = x + 7 - 7
3 = x
Hence, the input value of x would be 3 in other to obtain output value of 10 from the function, f(x) = x + 7
These same procedure would be taken for any given output value.
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