Help Danny and Sara interpret this insurance quote for their 2015 sports car and 2018 minivan. Determine the totals for items a, b, c, d, and e. Show your work or explain how you got your answer.

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6