Answer:
90
Step-by-step explanation:
Angle 2 = 180 - 68 = 112
Angle 3 = 90 - 68 = 22
Angle 2 - Angle 3 = 112 - 22 = 90
For the first question, find the mean, first quartile, minimum, maximum, and third quartile, and then graph on the x-axis (a number line). Then, create a line through the median, first, and third quartile. Lastly, connect the median, first and third quartile to make a box. Google images for more details.