Question

2^(x + 3) = 7. I ended up with x = 20.2534966 but it wasn't one of the answer choices

Answer 1

What were the choices? Were they exact or decimal?

Answer 2

x ≈ -5.19
x ≈ 0.94
x ≈ -0.19
x ≈ 2.81

Answer 3

\[x=\log_{2} (7)-3=\frac{\ln 7}{\ln 2}-3\]

Answer 4

oh. How do i get that? i got (x+3)log 2 = 7 lol

Answer 5

it should be \[(x+3)\log 2 = \log 7\]
if you're going that way

Answer 6

then divide both sides by \(\log 2\)
\[x+ 3 = \frac{\log 7}{\log 2}\]
\[x = \frac{log 7}{\log 2} - 3\]

Answer 7

oh so you're supposed to single out the x if there's only one in the equation?

Answer 8

yup. and also because you're looking for x

Answer 9

wow what a coincidence...the result is one of the choices ;)

Answer 10

ah i see. alright thanks :D