Mathematics
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OpenStudy (anonymous):
(FAN AND MEDAL) i really need help!!!
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OpenStudy (anonymous):
@jdoe0001 @jim_thompson5910
OpenStudy (jdoe0001):
answer is "blank"
since the question is "blank"
it follows it so, logically
OpenStudy (anonymous):
wait let me writte the question
OpenStudy (anonymous):
i need help on 3 and 4
OpenStudy (anonymous):
@ganeshie8 @jdoe0001
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jimthompson5910 (jim_thompson5910):
when you plug x = 0 into the f(x) function, what result do you get?
OpenStudy (anonymous):
x=1?
OpenStudy (anonymous):
@jim_thompson5910 ???
jimthompson5910 (jim_thompson5910):
f(x) = 3(4)^x
f(0) = 3(4)^0
f(0) = ???
OpenStudy (anonymous):
f(0)=3?
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jimthompson5910 (jim_thompson5910):
yes, so (0,3) is one point on this curve
jimthompson5910 (jim_thompson5910):
now plug in x = 1 and tell me what you get
OpenStudy (anonymous):
x=1?
jimthompson5910 (jim_thompson5910):
yeah instead of replacing x with 0, replace x with 1
OpenStudy (anonymous):
(1, 2)
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OpenStudy (anonymous):
@jim_thompson5910
jimthompson5910 (jim_thompson5910):
plug it into 3(4)^x
OpenStudy (anonymous):
f(1) = 3* 4^1?
OpenStudy (anonymous):
@jim_thompson5910
jimthompson5910 (jim_thompson5910):
yeah, now evaluate what you just wrote down
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OpenStudy (anonymous):
f(1)=12?
OpenStudy (anonymous):
@jim_thompson5910 ???
jimthompson5910 (jim_thompson5910):
correct
jimthompson5910 (jim_thompson5910):
if f(1) = 12, then what point is on this curve?
OpenStudy (anonymous):
1?
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OpenStudy (anonymous):
(1, 2)?
jimthompson5910 (jim_thompson5910):
(1,12) actually
jimthompson5910 (jim_thompson5910):
the input is x = 1
the output of the function is y = 12
y is the same as f(x)
jimthompson5910 (jim_thompson5910):
make sense?
OpenStudy (anonymous):
yes ^_^
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jimthompson5910 (jim_thompson5910):
now plug in x = 2
OpenStudy (anonymous):
f(1)= 3*4=12?
jimthompson5910 (jim_thompson5910):
no just like before, instead of 1 plug in 2
jimthompson5910 (jim_thompson5910):
plug 2 into 3(4)^x
OpenStudy (anonymous):
10(2)^2?
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jimthompson5910 (jim_thompson5910):
idk how you're getting that
OpenStudy (anonymous):
3(4)^2?
OpenStudy (anonymous):
@jim_thompson5910 ???
jimthompson5910 (jim_thompson5910):
much better
jimthompson5910 (jim_thompson5910):
evaluate that
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OpenStudy (anonymous):
3*4^2?
jimthompson5910 (jim_thompson5910):
what number is that expression equal to?
OpenStudy (anonymous):
48
jimthompson5910 (jim_thompson5910):
f(2) = 48 which means what point lies on the curve?
OpenStudy (anonymous):
2?
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jimthompson5910 (jim_thompson5910):
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