Answer:
x = 3.6
Step-by-step explanation:
By the Postulate of intersecting chords inside a circle.

1.5 meters tall is a good estimate
10.99x = 3.99x + 280
7x = 280
x = 40
They must sell 40 T-shirts to break even
43) 50% of the time, Store A has 550 or more customers per day.
44) Distribution A appears to be skewed to the left with no outliers and a center at 500 customers. Distribution B appears to be Normal with no outliers and a center at 400 customers.
45) Store A has more customers.