The question is: using the equation, determine how many hrs it takes for the chlorine residual to be zero. Show work

2.) The following data pertains to the chlorine residual in a swimming pool at various times after it has been treated with chemicals: Number of Chlorine residual hours (parts per million) 1.8 1.5 GOGANK 1.4 1.1 0.9 a.) Show all 3 remaining columns ( x], y', xy) and all 5 column totals needed above. b.) Find the value of SS(x). c.) Find the value of SS(y)