Ch===the radius of a sphere is increasing at a rate of 3 mm/s. how fast is the volume increasing when the diameter is 40 mm? evaluate your answer numerically. (round the answer to the nearest whole number.)'

Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control? a) volumes of the solutions b) appearance of the solutions c) temperatures of the solutions d) concentrations of the solutions