Write an exponential function y=ab^x for a graph that includes (1,15) and (0,6).
Ay=6(2.5)^x
b.y=3(5)^x
c.y=2.5(6)^x
d.y=5(3)^x
Ay=6(2.5)^x
c.y=2.5(6)^x
d.y=5(3)^x