Give three examples of models that represent something in the physical world: one that is an equation showing the relationship between physical quantities, one that is a picture or
diagram, and one that is a replica. Try to find examples that are not from your notes.

the correct answer is b

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.