PLSSS HELP IF YOU TURLY KNOW THISS

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?

What is an equivalent expression to ( 14400^4 )^8

Point s has coordinates (4,2). if you rotate s 90 degrees about the origin, (0,0), what are the coordinates of s’?