Answer:
Is this a complete question?
Answer:
First choice
Step-by-step explanation:
When y = 4, x = -7 or 5
So only first choice is correct.
Ans i trued
Step-by-step explanation:
Answer:
Step-by-step explanation:
3,9,12,(15),16,18,21
mean (middle number) = 15
Q1 = 9.....the middle number of the numbers before the mean
Q3 = 18...the middle number of the numbers after the mean
interquartile range (IQR) = Q3 - Q1 = 18 - 9 = 9 <==
I think it is D ...........