0.57803468 rounded to the nearest tenth

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

Which of the following is the result of expanding the series

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.