on monday the price of a gallon of gas was $1.98 and on saturday the price has risen to $2.46 what was the average rate of change of the price of a gallon of gas from monday to Saturday? Give units on 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