Use the following function rule to find f(3) f(x)=4^x+1 f(3)= square

To find \( f(3) \) using the given function rule \( f(x) = 4^x + 1 \), we need to substitute \( x = 3 \) into the function.<br /><br />\[ f(3) = 4^3 + 1 \]<br /><br />First, calculate \( 4^3 \):<br /><br />\[ 4^3 = 4 \times 4 \times 4 = 64 \]<br /><br />Now, add 1 to the result:<br /><br />\[ f(3) = 64 + 1 = 65 \]<br /><br />So, \( f(3) = 65 \).