What is the value of x^2 divided by y^4 when x=8 and y=2

The scatter plot graph shows the average annual income for a certain profession based on the number of years of experience which of the following is most likely to be the equation of the trend line for this set of data? a. i=5350e +37100 b. i=5350e-37100 c. i=5350e d. e=5350e+37100

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

Need solving this second acceleration problem.