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What value of x makes f(x) = 5 if f(x) = -2x + 25 ?
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What value of x makes f(x) = 5 if f(x) = -2x + 25 ?

User Ryan Doherty
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2 Answers

5 votes
Set the f(x) equation equal to 5 so that f(x) = -2x +25 = 5, then subtract 25 from both sides so that -2x = -20 then divide by 2 and solve for x which should give you 10 
User Kenji
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3 votes
5 = -2x + 25
-20 = -2x
20 = 2x
x = 10

The answer is 10
User Gokareless
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5.9k points
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