The square root of 144 is 12 (12*12) the square root of 256 is 16 (16*16)
20% decrease will be 20/100 ×30 dollars = 6 dollars
Answer:
Step-by-step explanation:
Draw a line through the data points with about half of the points on one side of the line and the other half on the other side. You'll see that there is a slight positive rise in the graph as we move from left to right, but the correlation is weak. Thus, 0.4 is the correct correlation coefficient in this case.