Board 8 > This is one of the most HARDEST MATH Questions for the SAT's!! Can you do it????

(+) Yeah! (+)

This is one of the most difficult math questions that high school teens will see on an american SAT test..and NO CALCULATOR IS ALLOWED either..

let's see if anyone can do it..

https://i.imgur.com/V52F4TE.png
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The bar for being a genius sure has fallen

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I'm pretty sure they chose x>3 instead of an equivalent but more allowing condition so that people felt they couldn't do the perfectly valid but discouraged strategy of setting x to 0 to check answers

That being said, x=4 isn't hard to do, simplifying the equation isn't hard to do, and you can do 1 second of dimensional analysis to immediately get the only possible answer
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NFUN posted...

I'm pretty sure they chose x>3 instead of an equivalent but more allowing condition so that people felt they couldn't do the perfectly valid but discouraged strategy of setting x to 0 to check answers

That being said, x=4 isn't hard to do, simplifying the equation isn't hard to do, and you can do 1 second of dimensional analysis to immediately get the only possible answer

2x+5 also survives dimensional analysis...!

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LordoftheMorons posted...

2x+5 also survives dimensional analysis...!

you're right, my bad. i didn't think of that argument until i solved the algebra
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when would I ever use this in real life?

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I feel like I've had 10x more difficult questions in my math class.

Then again you actually need a calculator for tests.

(Also answers C and D being parts of answers A and B already is cutting thinking time in half)
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