1. Salt water flows into a large tank of pure water. The concentration of the salt in the tank at t 6t C(t) = minutes is given by 10+t, were c is measured in grams/liter. Properly label the axes. a. When does the concentration in the tank reach 5 grams/liter? b. When is the concentration of salt in the large tank less than 3 grams/litre? [7T] y - axis 10 4 - 8 7 4 3 4 34 1 2 3 4 5 6 7 8 9 107 - X - asis 3