# How do you determine if the equation y = 300(1.6)^x represents exponential growth or decay?

This equation represents exponential growth because the number ($1.6$) raised to the power $x$ is greater than $1$.
If $y = a \cdot {b}^{x}$ and $a \ne 0$ then $y$ will grow exponentially as $x$ increases if $b > 1$. If $0 < b < 1$, then $y$ will decay exponentially as $x$ increases.