Step-by-step explanation: This is a linear function and is repesented by: y=mx+b where m is the slope and b is the y-intercept. Since the y-intercept is 0, we know any answer with addition signs in it since it starts at 0. s is the dependent variable, meaning it depends on our independent variable which is n to find a answer so that means s will stand by itself since it constantly changing and it depends on n to have an answer so the correct answer is s=n x 23
