Answer:
72.5
Step-by-step explanation:
45, 50, 55, 70, 70, 120, 130, 145
Median: 70
Lower quartile: 52.5
Upper quartile: 125
Interquartile range: 125 - 52.5 = 72.5
9
LN= 68°
I'm assuming you mean which one is written properly? It would be either 3 x 10^4 or 6 x 10^4.
Hope it helps!