And hopefully there's some values of x greater than zero where this thing right over here is equal to negative three. So let's try it out. Negative four e to the negative four x needs to be equal to negative three. We can divide both sides by negative four. We get e to the negative four x is equal to negative three-fourths divided by negative four is three-fourths. We can take the natural log of both sides and we will get negative four x is equal to the natural log of three-fourths. And just to be clear what I did here, you literally could put the natural log here, natural log there, and you could put the natural log there as well to see that step.