I have the solution here, and it's right:

Question

URL of image: i.ibb.co/42skQkD/image-2020-12-08-103138.png

However I got the comment:
'At the end you have written e ^ (x * ln (0.87)) but it is possible to write in a nicer way'. What do they mean?

Answer 1

e^(ln 0.87) = 0.87
So you could have written 0.87^x

Answer 2

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