Help please fast geometry surface area!

What value of x is in the solution set of 4x – 12 s 16 + 8x?

The graph shows the distance kerri drives on a trip. what is kerri's speed?

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?