anonymous
  • anonymous
Stan evaluated a function with a value and got 3 as the result. He wrote the entire process as a sentence. The function A.f(x)=x^2+2x B.f(x)=x^2-3x , When evaluated with A.3 B.-3 gives the value of 3 which function gices the value 3 when plugged in with 3 or -3 ?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
i do not understand what this question is asking let me try to read it again
anonymous
  • anonymous
first off you have two functions
anonymous
  • anonymous
yes function a and b

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anonymous
  • anonymous
not "a function" but if you get 3 for the first one, it means \[f(x)=x^2+2x=3\]
anonymous
  • anonymous
oooh i see what it is asking
anonymous
  • anonymous
plug in 3 in to each function and see which one gives 3 as an answer
anonymous
  • anonymous
ive tried that but i keep getting 15 or -15
anonymous
  • anonymous
for the first one?
anonymous
  • anonymous
the question asks "which function gices the value 3 when plugged in with 3 or -3 ?"
anonymous
  • anonymous
so evidently it is not A since \[3^2+2\times 3=15\]
anonymous
  • anonymous
however if you try B you should get it
anonymous
  • anonymous
for f(x)=x^2+2x i got -15 when plugged in with -3 and for f(x)=x^2-3x i got 0 when plugged in with -3
anonymous
  • anonymous
yeah true but if you plug in 3 in to the second one, you should get 3 out
anonymous
  • anonymous
btw the second one does not get 0 if you plug in 3
anonymous
  • anonymous
hmmm hold on a second
anonymous
  • anonymous
\[f(x)=x^2+2x\] \[f(-3)=(-3)^2+2\times (-3)\] try that
anonymous
  • anonymous
you do not get \(-15\) because \((-3)^2=9\) not \(-9\) you should get \(9-6=3\) for A
anonymous
  • anonymous
that was correct thank you so much can i ask you just one more question
anonymous
  • anonymous
sure
anonymous
  • anonymous
A school is planning an event to raise $1,000 for charity. The cost of organizing the event is $200. The tickets are priced at $6 per child and $8 per adult. If x children and y adults attend the event, the equation that represents the total revenue that the organizers must collect from ticket sales to raise the targeted amount of $1,000 after paying for the $200 in expenses is . If the event were only for adults, adults would have to attend for the organizers to raise the targeted amount.
anonymous
  • anonymous
how many adults would have to attend for the organizers to raise the targeted amount.? sorry
anonymous
  • anonymous
& how would you set it up as a equation with the given information
anonymous
  • anonymous
@satellite73
anonymous
  • anonymous
can you please help me on this question
anonymous
  • anonymous
@misty1212

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