Final answer:
To solve the equation 7^x = e^(x+9), take the natural logarithm of both sides and solve for x.
Step-by-step explanation:
To solve the equation 7^x = e^(x+9), we can take the natural logarithm (ln) of both sides.
ln(7^x) = ln(e^(x+9))
x * ln(7) = (x+9) * ln(e)
x * ln(7) = (x+9)
x * ln(7) - x = 9
x * (ln(7) - 1) = 9
x = 9 / (ln(7) - 1)
Using a calculator, we find that x ≈ 4.027.