Solve the system by using substitution.
y = 2x – 10 and - 6x – 2y = -10

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.

Somone me i want to know what 18 hours out of 24 hours in a fraction

How do you solve a question like this?