Determine the value of c and the covariance and correlation for the joint probability mass function f(x, y) = c(x + y) for x = 1, 2, 3 and y = 1, 2, 3.

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

What are the solutions of the equation? 6x^2 + 11x + 4 = 0 a. 4/3, 1/2 b. -4/3, -1/2 c. 4/3, -1/2 d. -4/3, 1/2

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?