The graph shows how the number of key chains in your collection increased since you began collecting 55 months ago. During which month did you collect the most key chains?.

What does a triple-beam balance require the user to do? add the numbers from the three sliders to determine the mass of an object multiply the numbers from the three sliders to determine the mass of an object add the numbers from the three sliders to determine the volume of an object multiply the numbers from the three sliders to determine the volume of an object