The number of X-rays taken and X-ray costs over the last nine months in Beverly Hospital are given below: X-Rays Month Taken January 6.250 February 7.000 March 5.000 April 4.250 May 4.500 June 3.000 July 3.750 August 5.500 September 5.750 X-Ray Costs $28.000 $29.000 $23.000 $20.000 $22.000 $17.000 $18.000 $24.000 $26.000 9. Use high-low method, estimate the cost formula for X-rays. (10 points) 10. What X-ray costs would you expect to be incurred during a month in which 4,600 X-rays are taken? (5 Points)