Marcus is rewriting a polynomial by combining like terms. Which terms does he still need to combine to finish rewriting the polynomial? -3mn - 4n^4+ 2mn - 6n-5mn^3- 6m^3n

Step-by-step explanation:

-3mn - 4n^4+ 2mn - 6n-5mn^3- 6m^3n=

he needs to combine -3mn and 2mn,

not sure if the last term is correct

e^-kt = n/n0 = 0.79  

-kt = ln 0.79  

t = - ln 0.79/0.0001  

= 2357 years

step-by-step explanation: