Answer:
D. 4x+5x=180
Step-by-step explanation:
Answer:
x=3 , x=-3
Step-by-step explanation:

Add 9 on both sides

To remove base 'e' we take ln on both sides


Both sides have ln , so we make the terms equal

Take square root on both sides

x=3 , x=-3
I hope this is what you were looking for.
The transformation of a base function,f (x) by the multiplication of a constant k where 0 <k <1