Question 1156062
A=Aob^x
15=Aob^1
6=Aob^0=Ao
therefore 15=6*b
b=2.5
A=6(2.5)^x
when x=-2 A=6/6.25=0.96


{{{graph(300,300,-5,5,-5,60,6(2.5)^x)}}}