Solvex - 7x - 34 = 10 halo pls hel

Provide an example of a trigonometric function and describe how it is transformed from the standard trigonometric function f(x) = sin x, f(x) = cos x, or f(x) tan x using key features.

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years