Answer:

Step-by-step explanation:
Collect like terms and calculate the sum
Answer:
mean absolute deviation
Step-by-step explanation:
The mean absolute deviation of a dataset is the average distance between each data point and the mean. It gives us an idea about the variability in a dataset.
D.........................................
There is a strong, negative relationship between outside temperature and snow shovel sales. As x increases, y decreases.
Slope = -1/4
(4, 7)
y - 7 = -1/4 (x - 4)
y - 7 = -1/4x + 1
y = -1/4 + 8
answer is C