Solve the following system of equations:
xy = -4
2y = x- 6
Answer choices:
A. (-1, 4), (-2, 2)
B. (2,-2), (4, -1)
C. (4,3), (-3,-4)
D. (-4, 12).(-1, -3)

Tree diagram to find the prime factors of 18

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

What is the total area of the figure?