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Mathematics 17 Online
OpenStudy (anonymous):

(FAN AND MEDAL) i really need help!!!

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

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?

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)

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

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?

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 ^_^

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?

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

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?

jimthompson5910 (jim_thompson5910):

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