Use the following function rule to find f(0) f(x)=5^x+4 f(0)= square

To find \( f(0) \), substitute \( x = 0 \) into the given function rule:<br /><br />\[<br />f(x) = 5^x + 4<br />\]<br /><br />Substitute \( x = 0 \):<br /><br />\[<br />f(0) = 5^0 + 4<br />\]<br /><br />Recall that any nonzero number raised to the power of 0 is equal to 1:<br /><br />\[<br />5^0 = 1<br />\]<br /><br />So:<br /><br />\[<br />f(0) = 1 + 4<br />\]<br /><br />Simplify:<br /><br />\[<br />f(0) = 5<br />\]<br /><br />Thus, the answer is:<br /><br />\[<br />f(0) = \boxed{5}<br />\]