Directions: For the following question, consider each of the choices separately and select all that apply.

多选题 Based on the information in the two graphs, which of the following statements are true?
Indicate all such statements.

A. The number of students enrolled in private 2-year institutions was approximately the same in 1981 and 1987.
B. The percentage of students enrolled in private 2-year institutions was approximately the same in 1981 and 1987.
C. From 1972 to 1995, the percentage of college students who were enrolled in 2-year institutions rose by more than 25%.

【正确答案】 A、B、C

【答案解析】· From the top graph, we see that for every 100 students enrolled in private 2-year institutions in 1981, the number increased to about 110 in 1983, stayed between 105 and 110 until 1986, and then dropped back to 100 in 1987. Statement A is true. · From the bottom graph, we see that the percentage of students enrolled in 2-year private institutions remained constant at about 2% from 1981 to 1987. Statement B is true. [*]

多选题 Which of the following expresses the area of a circle in terms of C, its circumference?

【正确答案】 A

【答案解析】Since C= 2πr,[*]and the area of the circle is [*]