If you answer both of them can you plz explain thank you

Afactory adds 3 red drops and 2 blue drops of coloring to white paint to make each pint of purple paint. the factory will make 50 gallons of the purple paint. how many drops of red and blue coloring will the factory need in the 50 gallon batch of purple paint.

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?