the domain of an exponential function is all real numbers. the range of an exponential function is positive…

Brief Explanations:

An exponential function is of the form $y = a^x$ ($a>0,a\neq1$). For any real - valued input $x$, the function is well - defined, so the domain is all real numbers. Since $a^x>0$ for all real $x$ when $a > 0,a\neq1$, the range is positive real numbers. To find the $x$ - intercept, we set $y = 0$, so $a^x=0$. There is no real number $x$ such that $a^x = 0$. To find the $y$ - intercept, we set $x = 0$, then $y=a^0 = 1$. So the graph has a $y$ - intercept only.

Answer:

a y - intercept only