A certain shade of pink is created by adding 3 cups of red paint to 12 cups of white paint. a. how many cups of red paint should be added to 1 cup of white paint?

The temperature of a chemical solution is originally 21 ? c . a chemist heats the solution at a constant rate, and the temperature of the solution 75 ? c after 1212 12 minutes of heating. the temperature, tt t , of the solution in ? c is a function of x , the heating time in minutes. write the function's formula.