Sample Response: A model is an estimate or approximation of a data set. In the real world, there are too many variables to know exactly what will happen. However, if a model is a good fit, then it can be used to make predictions about what will happen. With a useful model, a predicted value should be a good estimate of an observed value.
a model is an estimate or approximation of a data set. In the real world, there are too many variables to know exactly what will happen. However, if a model is a good fit, then it can be used to make predictions about what will happen. With a useful model, a predicted value should be a good estimate of an observed value.
[(4x+2)/(x+5)]-[(3x+1)/(x+5)] <span>They have common denominators, so just add the numerators like normal fractions:</span> =[(4x+2)-(3x+1)]/(x+5) =[(4x+2-3x-1)]/(x+5) =[(x+1)]/(x+5)
