Question

For which function does f(4) = 10?

f(x)=2(x+1)
f of x is equal to 2 times open paren x plus 1 close paren

f(x) = 3x−8
f(x) = 3x−8

f(x) = x2−7
f(x) = x2−7

f(x)=−x+12

Answer 1

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Answer:

f(x) = 2(x+1)

Explanation:

Try the choices and see:

2(4 +1) = 2·5 = 10 . . . . first choice works

3·4 -8 = 4 . . . . doesn't work

4² -7 = 9 . . . . doesn't work

-4 +12 = 8 . . . . doesn't work

The appropriate choice is ...

f(x) = 2(x +1)