Answer:
Percent of decrease in the value is 40%.
Step-by-step explanation:
Let's find the value of y when t=1 and t=2 because need to find the decrease by percent of t increases by 1 unit.
When t=1
y=[tex]\frac{3}{5}^{1}[/tex]=0.6
When t=2
y=[tex]\frac{3}{5} ^{2}[/tex] =0.36
Percent of decrease = 100 % -[tex]\frac{0.36}{0.6}*100%[/tex]% = 100% -60% =40%
