SOLUTION: The graph of an exponential function, y= a • b^x, passes through the points (1,1) and (2, 3.5). Find the value of a.

Algebra ->  Exponents -> SOLUTION: The graph of an exponential function, y= a • b^x, passes through the points (1,1) and (2, 3.5). Find the value of a.      Log On


   

Question 1044797: The graph of an exponential function, y= a • b^x, passes through the points (1,1) and (2, 3.5). Find the value of a.
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!




Since is on the graph,



Which is to say



Then, since is on the graph:



Substitute for b:





John

My calculator said it, I believe it, that settles it