can you help me solve covariance of this problem and can you please tell me if the answers I solvedare correct? This question is from economic finance book

Use the probability distribution given in the table below and consider two new random variables, W: 7 + 4X and V = 6 + 1 Y, to answer the following questions Joint Distribution of Weather Conditions and Commuting Times Rain (X = 0) No Rain (X = 1) Total Long commute (Y = 0) 0.39 0.43 0.82 Short commute (Y= 1) 0.18 0.00 0.18 Total 0.57 0.43 1.00 Compute the mean of W. E( W) = 8.72 (Round your response to two decimal places) Compute the mean of V. EN) = 6.18 (Round your response to two decimal places) Compute the variance of W. 6W = 4 (Round your response to four decimal places) Compute the variance of V. of, = 0.15 (Round your response to four decimal places) Compute the covariance between Wand V Enter your answer in each of the answer boxes