Answer:
Step-by-step explanation:
y = mx + b
m = Δy/Δx = (-1 - (-7)) / (-3 - 6) = 6/-9 = -2/3
y = (-2/3)x + b
-1 = (-2/3)(-3) + b
-1 = 2 + b
b = -3
y = (-2/3)x - 3
Answer:
B
Step-by-step explanation:
Answer: Minimum sample size = 110
Step-by-step explanation:
Formula to find minimum sample size :
, where z = critical z-value for confidence level, s= sample standard deviation , E = margin of error
Given: E= 4 , s= 18
Critical z-value for 98% confidence = 2.327
So, 

Minimum sample size = 110
Answer:
D 9 softball tickets for $72
Step-by-step explanation:
72/9=8