makennamarieb makennamarieb

01-07-2018
Mathematics

contestada

Solve
f(x)=15(0.2)^x
f(x)=40+1^x
X=years
Solve for x.
Thanks to whoever answers and best answer will be brainiest!

Respuesta :

konrad509 konrad509

01-07-2018

[tex]f(x)=15\cdot0.2^x\\ 0.2^x=\dfrac{f(x)}{15}\\ x=\log_{0.2}\dfrac{f(x)}{15}\\\\\\ f(x)=40+1^x\\ 1^x=f(x)-40\\ x=\log_1(f(x)-40)[/tex]

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