Discussion Questions$1.$ Use regression to develop a trend line that could be used to forecast the number of changeovers per year for the next several years$\mathrm{.}2.$ Use the intercept and slope from your regression to forecast the year in which the number of changeovers will incur a cost greater than $$200,000$ per year and thus make conjoining the three reservoirs a better option$\mathrm{.}3.$ If the extra cost of maintenance for the single conjoined air reservoir was actually an additional $$400,000$ per year instead of an additional $$200,000$ per year, in what year would the number of changeovers make going to one reservoir a better option?