What is the vale of f(-4) f(x)=5+2|x| f(-4)=

f(-4) = 13

Put the value of x = -4 to the equation of the function:

f(x) = 5 + 2|x|

f(-4) = 5 + 2|-4| = 5 + 2(4) = 5 + 8 = 13

|a| = a for a ≥ 0

examples: |3| = 3, |0.5| = 0.5, |123| = 123

|a| = -a for a < 0

examples: |-3| = -(-3) = 3, |-0.5| = -(-0.5) = 0.5, |-123| = 123

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