exponential equation ^ and exp give different answers

I have an equation that I found online that I want to use on my data Y = 0.9x0.6

The 0.6 is superscript after the x

I tried two methods that yielded very different results

y = (0.9 * (x ^ 0.6))

and

y = (0.9 * exp(x * 0.6))

1. Does ^ and exp do the same thing?
2. Am I translating the equation correctly into R?