10 is ur range
hope this helps
Answer:
The interquartile range would be 10.
Step-by-step explanation:
9, 10, 11, 12, 16, 20, 20
Median: 12
Lower quartile (Q1): 10
Upper quartie (Q2): 20
(IQR) Interquartile range: 20 - 10 = 10
check the picture below.
notice, a function that is decreasing, namely have a negative slope, doesn't have to be negative.
-25(t +7)
-25t - 175
Factor out -25
-25 *t +-25* 7