Question

na equaçao y=2 log3(x+4) y sera igual a 8 quando x sera igual a:

Answer 1

Z=log3 (x+4)
Y= 2 . Z
8=2 . Z
Z=4
4= log3(x+4)
X+4 = 3.3.3.3
X+4 = 81
X=81-4
X= 77