Question

Sove this exponential equation to the nearest hundredth: 3^x+2=15

Answer 1

Is the "+2" in the exponent?

Answer 2

\[3^x=13\]
\[x=\frac{\ln(13)}{\ln(3)}\]

Answer 3

3^x=13
x = log13 / log3 = 2.33

Answer 4

... and if the +2 is in the exponent it is
3^(x+2) = 15
(x+2) log 3 = log 15
x+2 = log15/log3
x = log15/log3-2 = 0.46