9) f(8) for f(x) = f(x)= ) 8x+1,&ifxlt 1 8x,&if8leqslant xleqslant 13 8-3x,&ifxgt 13 A) 40 B) -16 C) 9 D) 64

To find , we need to determine which piece of the piecewise function applies when .Given the function: Since falls within the range , we use the second piece of the function, which is .Now, substitute into the function: Therefore, the correct answer is:D) 64