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Given the function f(x)= 4 lx - 5 l +3 for what values of x is f(x) =15

1 Answer

2 votes

Answer:2,8

Explanation:

Given that
f(x)=4|x-5|+3

We need the values of
x for which
f(x)=15.

So,


15=4|x-5|+3


12=4|x-5|


|x-5|=3

If
x\geq 5,


x-5=3\\x=8

If
x< 5,


5-x=3\\x=2

So,
2,8 are the solutions

User Bmdelacruz
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