What is the value of x if 5x+2=5^9

Answer:
Option C is correct
Value of x = 7
Step-by-step explanation:
Using the exponent rule:
[tex]x^a = x^b[/tex]
⇒a = b
Solve the equation:
[tex]5^{x+2} = 5^9[/tex]
Apply the exponent rule we have;
[tex]x+2 = 9[/tex]
Subtract 2 from both sides we have;
[tex]x = 7[/tex]
Therefore, the value of x is, 7