Answer:
The analysis that is not useful for evaluating whether the increase in sales is statistically significant is to calculate precision of the prediction.
Step-by-step explanation:
" A sales promotion entails the features via advertising and or a discounted price of a particular product or service"
Answer:
Complementary: (2,3) & (1,9)
Supplementary: (6,7) & (5,8)
Step-by-step explanation:
The vertex form:

The axis of symetry is x = h.

We have

Substitute:

<h3>Answer: x = -3</h3>
Answer:
-1
Step-by-step explanation:
Over 12 on the x axis it goes down 12 on the y axis so the rate of change is -1