Which expression is equivalent to

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.

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

What is the anwers for 9+2x=5x-3-x