11. A survey was conducted by asking 200 students in Addis Ababa city how they traveled to school. The following pie chart shows the
result of the survey. How many of the students travelled to school
by taxi? Bus=20%,Train=8%,walk=40%
A.80

B. 64

C. 40

D. 32
​

The function g(x) is defined as shown. x-1, -2 g(x) = 2x+3, -1 6-x, x23

What is the distance between a and b? round your answer to the nearest tenth. a coordinate plane is shown. point a is located at negative 1, 5, and point b is located at 4, 1. a line segment connects the two points.

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables