The multiplicative change can be found by finding the ratio between each term of y-values
[tex] \frac{1}{10}: \frac{1}{2} = 1:5[/tex]
[tex] \frac{1}{2}: \frac{5}{2}=1:5 [/tex]
[tex] \frac{5}{2}: \frac{25}{2} = 1:5 [/tex]
[tex] \frac{5}{2} : \frac{125}{2}=1:5 [/tex]
The consecutive term is always 5 times larger than the previous one, hence the multiplicative change is 5