Anderson has a phone plan that charges a monthly rate of $50 for the first 1,000 minutes plus $0.25 for each additional minute. Which of the following functions models Anderson’s plan for all m> 1,000, with m as the number of minutes per month and f(m) as the monthly charge? f(m) = 0.25m f(m) = 0.25m f(m) = 0.25m + 50 f(m) = 0.25m + 50 f(m) = 0.25m - 200 f(m) = 0.25m - 200 f(m) = 0.25m - 950 f(m) = 0.25m - 950 f(m) = 0.25m + 1,000