Help me out please Real answers only pleasee

y=800(1.15)^x ---> Growth factor: 15%

y=3(0.85)^x ---> Decay factor: 15%

y=2000(4/5)^x --> Decay factor: 20%

y=0.3(0.5)^x ---> Decay factor: 50%

y=1200(1.05)^x Growth factor: 5%

(If b is less than 1, the graph is an exponential decay. If b is more than 1, the graph is an exponential growth.)