answer them with steps please

Mohamed is a financial advisor who has recommended two possible mutual funds for investment: Fund A and Fund B. The return that will be achieved by each of these depends on whether the economy is good, fair, or poor. A payoff table has been constructed to illustrate this situation: Consulting income at Kate Walsh Associates for the period February-June has been as follows: Calculate the simple average for the period. a. 150 b. 124 c. 155 d. 149 A second hand car dealer has 7 cars for sale. She decides to investigate the link between the age of the cars, x years, and the mileage, y thousand miles. The date collected from the cars is shown in the table below. Use your line to find the mileage predicted by the regression line for a 20 year old car