Write an inequality that represents the statement “x is at most –5 or at least 7.”
a) x < –5 or x > 7
b) x > –5 or x < 7
c) x ≤ -5 or x ≥ 7
d) x ≥ -5 or x ≤ 7

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?