Show work please ! if you answer :)
2nd term in expansion of (1 +5b)^3

Average acceleration: i have no idea how to do this.

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?