Please help me with this asap

What is the first step of an indirect proof of a number that is divisible by two

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?