Question

What is the solution to the equation
9^(x + 1) = 27 ?
x = 2.5
x = 0.5
x = -0.5
x = -3.5

stuck on this!

Answer 1

9^(x + 1) = 27

(3^2)^(x + 1) = 3^3

3^(2(x+1)) = 3^3


Since the bases are equal, the exponents are equal. So

2(x+1) = 3


I'll let you continue

Answer 2

i guess it's D

Answer 3

no.. you need to solve for x in jim's last line...

Answer 4

don't guess...

Answer 5

i'm working it out

Answer 6

2x+2=3

Answer 7

so far so good

Answer 8

then 2x=1

Answer 9

x=1/2?

Answer 10

x=.5

Answer 11

yes, which is what in decimal form?

Answer 12

you got it

Answer 13

gnarly