Given a(x)=8^x , if a(x) is vertically stretched by a factor of 4 and reflected across the y-axis, what is the new expression of a(x) ?(1 point) Responses a(x)=−4⋅8−x a left parenthesis x right parenthesis equals negative 4 times 8 superscript negative x baseline a(x)=8−4x a left parenthesis x right parenthesis equals 8 superscript negative 4 x baseline a(x)=8x−4 a left parenthesis x right parenthesis equals 8 superscript x baseline minus 4 a(x)=4⋅8−x
The correct answer is:
a(x) = -4⋅8^(-x)