Question

Which point corresponds to the real zero of the graph of y = log3 (x+2) - 1?

Answer 1

Answer:

(1, 0 )

Step-by-step explanation:

using the rule of logarithms

$log_{b}$ x = n ⇒ x = $b^{n}$ , then

y = $log_{3}$ (x + 2) - 1

to find the zero let y = 0 , that is

$log_{3}$ (x + 2) - 1 = 0 ( add 1 to both sides )

$log_{3}$ (x + 2) = 1 , then

x + 2 = $3^{1}$ = 3 ( subtract 2 from both sides )

x = 1

the zero is (1, 0 )