How do i solve for [350-(110-30)/2]

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

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

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.