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anonymous
 5 years ago
I need help with exponential regression...I have E(x)=164.96(1.03)^x for equation for high school graduates...need to find the first year of the decade in which number of graduates will reach 5 million
anonymous
 5 years ago
I need help with exponential regression...I have E(x)=164.96(1.03)^x for equation for high school graduates...need to find the first year of the decade in which number of graduates will reach 5 million

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0E a function of x, E is what and x is what? im guessing E is graduates and x is year?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yes I used cal to get a b and r

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0plug 5mill into E(x) and solve for x

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yes got that but do I ln or log...can't remember

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0years are in decades and graduates are in 1000s so would I divide 5 mil by 100

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0do log base 1.03 there is probably a key on your calculator

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0actually im sorry you are right take the natural log of both sides. and the exponent of x will come out as a multiple of ln(1.03) so \[\ln(1.03^x) = xln(1.03)\] ln(1.03) is just a constant so you can divide by it on both sides

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0thank you for the confirmation

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0one more thing I have year 2050 from the linear function and year 2070 from the exponential...which one seems more reasonable?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0based on the values of correlation factor r the linear function would be but if you're looking at 5 million wouldn't it take less years to get there Exponentially versus linearly

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0im not sure from what was given i only know of E(x) and x,

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0used 5000 instead of 5 mil bc grads in 1000s is that right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yeah to which question, lol?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0lol just agreeing with the thing you said about linear versus exponential growth it would have to be 2050. but i would look into that more as to how to get to that answer
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