The answer is I believe b=70
Answer:
i never understud it
Step-by-step explanation:
it is a linear equation
if you take the negative of x and subtract 1 you get Y
so the answer is A
Answer:
A and B
Step-by-step explanation:
Answer: 3424.28
Step-by-step explanation:
Given data : 378, 361, 350, 375, 200, 391, 375, 368, 321
Number of data values = 9
Mean :

Variance = 

Variance = 