Can someone please answer this question I need the answer plsss

In which of the situations can information about tyler be represented by the expression r+3 when r represents information about ray? check all that apply.

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.

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?