A bakery can make 70 cheesecakes for every 7 blocks of cream cheese. Which table represents the relationship between the number of cheesecakes the bakery makes and the number of blocks of cream cheese the bakery uses? table a : 7 to 1 , 14 to 2 , 21 to 3

table b : 1 to 7 , 2 to 14 , 3 to 21

table c : 10 to 1 , 20 to 2 , 30 to 3

table d : 1 to 10 , 2 to 20 , 3 to 30​

The discrete random variables x and y take integer values with joint probability distribution given by f (x, y) = a(y−x+1) 0 ≤ x ≤ y ≤ 2 or =0 otherwise, where a is a constant. 1 tabulate the distribution and show that a = 0.1.2 find the marginal distributions of x and y. 3 calculate cov(x, y).4 state, giving a reason, whether x and y are independent. 5 calculate e(y|x = 1).