Work Step by Step
Let $y=ab^x$. Then our equations are: $4=ab^1$ and $32=ab^2$. If we divide the second equation by the first one we get: $8=b$. Then $4=a\cdot8^1=8a\\a=0.5$. Thus $y=0.5\cdot8^x$
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.