Which of the following would be the best example of parallel lines in the real world?
o a. the lines formed on a windowpane
o b. a four-way stop at an intersection
o c. the northbound and southbound lanes on a straight highway
o d. a bridge extending over a river

Ameteorologist is studying the monthly rainfall in a section of the brazilian rainforest. she recorded the monthly rainfall, in inches, for last year. they were: 10.4, 10.3, 11.7, 11.1, 8.0, 4.4, 2.6, 1.8, 2.5, 4.4, 7.3, 9.5 fill in the missing values in the formula. what is the variance?