Physics
sbb
2021-05-02 11:55:45
The range of the function f(x) = x + 5 is {7, 9}. What is the function’s domain?
ANSWERS
shirleyjin1999
2021-05-02 16:02:04

Domain of a function is all real numbers x such that x≥0, whereas range of a function is all real numbers f(x) such that f(x)≥0. f(x) = 7,9 when f(x) = 7, x= f(x)-5 x= 2 when f(x)=9 x= f(x)-5 x=9-5 = 4 Range of the function is 2≤x≤4

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