Answer:
x = 7
Step-by-step explanation:
Using the rule of logarithms
[tex]log_{b}[/tex] x = n ⇔ x = [tex]b^{n}[/tex]
Hence
[tex]log_{x}[/tex] 343 = 3 ⇒ 343 = x³
Take the cube root of both sides
x = [tex]\sqrt[3]{343}[/tex] = 7
