=+15. After graduation, you take a position at Top-Slice, a wellknown manufacturer of golf balls. One of your duties is to forecast monthly demand for golf balls. Using the following data, you developed a regression model that expresses monthly sales as a function of average temperature for the month:

Monthly sales = -767.7 + 98.5 (average temperature)

MONTHLY SALES AVERAGE TEMPERATURE March 2017 4,670 52 April 5,310 58 May 6,320 69 June 7,080 75 July 7,210 83 August 7,040 82 September 6,590 78 October 5,520 65 November 4,640 54 December 4,000 48 January 2018 2,840 41 February 3,170 42