If $$y=2\left(0.8\right)^x$$   and $$y=ab^x$$  , what is the value of a?

If $$y=3\left(15\right)^x-12$$   and $$y=ab^x$$  , what is the value of b?

If $$y=60\left(0.2\right)^{-x}+20$$   and $$y=ab^x$$  , what is the value of a?

If $$y=10\left(0.35\right)^x+4$$   and $$y=ab^x$$  , what is the value of b?

$$y=3\left(4\right)^x$$  , is the graph increasing (growth) or decreasing (decay)?

Hint: look at the value of b

$$y=0.5\left(3\right)^x$$  , is the graph increasing (growth) or decreasing (decay)?

Hint: look at the value of b

$$y=2\left(0.25\right)^x$$  , is the graph increasing (growth) or decreasing (decay)?

Hint: look at the value of b

$$y=\left(0.5\right)^x+4$$  , is the graph increasing (growth) or decreasing (decay)?

Hint: look at the value of b