The table shows the reduction in costs (in hundreds) after a manager found ways each month to cut back in his store. identify the best fit mathematical model with its corresponding r^2 value and tell whether it is a good model.
month: 1. 2. 3. 4. 5
profit loss: 86. 82. 72. 45. 15

a: quadratic model, 0.997
no 0.997 is too high an r^2 value.
b: quadratic model, 0.997
yes, 0.997 is very close to 1.
c. linear model, 0.902
no, 0.902 is too high an r^2 value.
d. linear model, 0.902
yes, 0.902 is very close to 1.

  B: quadratic model, 0.997

  Yes, 0.997 is very close to 1.

Step-by-step explanation:

In general, the better the model, the closer the R²-value is to 1. A graph shows the quadratic model to be a good fit.

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Comment on "better models"

A 4th-degree polynomial can be written that will fit each of the 5 points exactly and give an R²-value of 1. However, the model does not appear to interpolate or extrapolate well. The quadratic offers a reasonable fit that is better than that of the linear model and seems to have reasonable behavior between and beyond the given data points.

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation: