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anonymous
 one year ago
Help!! I'm doing homework right now and I'm really struggling with it. could anyone walk me though f(x)=32x1+x find f(4)
anonymous
 one year ago
Help!! I'm doing homework right now and I'm really struggling with it. could anyone walk me though f(x)=32x1+x find f(4)

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Try simplifying this. \[3(2x + 1)\] Can be simplified to \[5x + 5\] by multiplying the inside of the brackets by 3.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay that makes since can you keep explaining? I'm kinda getting it

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0This makes the sum \[f(x) = (5x + 5) + x\] You can simplify it further by removing the '+x' by putting it inside the brackets. That gives you \[F(x) = 6x + 5\] Now try removing x from the first side. That'll give you f. Remember, what ever you do to one side you must do to the other.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so to get f by itself would I multiply x or 5?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0F(x) is F times X, so you remove the x by dividing both sides by x.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay so if I do that I get f=6x+4 ? I'm sorry this is so confusing.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Huh? Ok. 6x divided by x is 6. does that help?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0NO WAIT GOD IT'S A FUNCTION

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ERASE EVERYTHING I JUST SAID

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Right. This is much easier, actually. Don't actually erase everything, because the simplification still stands You just need to work out \[6x + 5\] if X is 4.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0that was my bad I should of told you😂

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so would I do 6•4+5?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0No, I was a muppet and completely forgot F(x) means x is input thus function.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yeah, exactly. For real and proper this time :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay so is that all since I found 4's function or is there more?(:

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yup, that's all. For functions, if you need to find f and you have the input, you just substitute the input for x.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thank you so much this makes total since now! you are a life saver

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0On the plus side, you now know how to solve both\[fx = 3(2x+1) + x\] and \[f(x) 3(2x + 1) +x\] which are for some reason completely different.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0No problem! Thank you for forgiving my muppetosity :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so my answer to this problem is just 6•4+5

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay thank you again

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0GOD NOT AGAIN I'M SO STUPID It doesn't simplify to 5x + 5. It's 6x + 3. So \[F(4) = (6x + 3) + x\] equals \[F(4) = (7 \times 4) +3\] So F(4) = 25. This time I'm pretty sure I'm right, but give me a minute and I'm sure I'll find out I'm counting in the wrong language or something.
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