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 ?

Question

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 ?

anonymous · Answer

i do not understand what this question is asking
let me try to read it again

anonymous · Answer

first off you have two functions

anonymous · Answer

yes function a and b

anonymous · Answer

not "a function" 
but if you get 3 for the first one, it means 
$$f(x)=x^2+2x=3$$

anonymous · Answer

oooh i see what it is asking

anonymous · Answer

plug in 3 in to each function and see which one gives 3 as an answer

anonymous · Answer

ive tried that but i keep getting 15 or -15

anonymous · Answer

for the first one?

anonymous · Answer

the question asks "which function gices the value 3 when plugged in with 3 or -3 ?"

anonymous · Answer

so evidently it is not A since 
$$3^2+2\times 3=15$$

anonymous · Answer

however if you try B you should get it

anonymous · Answer

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 · Answer

yeah true
but if you plug in 3 in to the second one, you should get 3 out

anonymous · Answer

btw  the second one does not get 0 if you plug in 3

anonymous · Answer

hmmm hold on a second

anonymous · Answer

$$f(x)=x^2+2x$$
$$f(-3)=(-3)^2+2\times (-3)$$ try that

anonymous · Answer

you do not get $-15$ because $(-3)^2=9$ not $-9$
you should get $9-6=3$ for A

anonymous · Answer

that was correct thank you so much can i ask you just one more question

anonymous · Answer

sure

anonymous · Answer

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 · Answer

how many adults would have to attend for the organizers to raise the targeted amount.? sorry

anonymous · Answer

& how would you set it up as a equation with the given information

anonymous · Answer

@satellite73

anonymous · Answer

can you please help me on this question

anonymous · Answer

@misty1212