Eighty increased by twice a number

160

Step-by-step explanation:

It would be 160 because 80 times 2 would be 160 and 160 dived by 80 equals 2. Hope this helps :3

B) 0.972

Step-by-step explanation:

To be able to calculate the correlation coefficient of the model you just have to divide the number of one year by the number of the next year. TO make it clearer you can do it with the years 2002 and 2003:

Correlation Coefficient= =.960 and since the closest to that number is the .972 that´s the one that is the correct answer.