PLEASE HELP TEST DUE IN 1 HOUR! WILL GIVE BRAINLIEST!

An an average person has 6×10 by the power of two as many red blood cells as white blood cells a small sample of the blood has 7×10 by the power of three white blood cells about how many red blood cells are in the sample

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64