Answer:
Percentage of students who tried both questions = 
Percentage of students who tried at least one question = 
Step-by-step explanation:
Given: 25 students take a midterm psychology exam, 15 answered the first of two bonus questions, 11 answered the second bonus question, and 1 didn't bother with either one.
To find: percentage of students who tried both questions and percentage of students who tried at least one question
Solution:
Let A denotes students who answered the first of two bonus questions and B denotes students who answered the second bonus question.
Let U denotes the universal set denoting students who take a midterm psychology exam.




Percentage of students who tried both questions = 
Percentage of students who tried at least one question = 
Answer:
140 minutes
Step-by-step explanation:
If it takes him 30 mins to plant three, then 30 divided into three equal groups is 10. Then we multiply 14 and 10 together since it takes Andre ten minutes to plant each sapling. This means that the 14 saplings takes ten minutes EACH to plant.
One-to-One Functions. ... If no horizontal line intersects the graph of the function f in more than one point, then the function is 1 -to- 1 . A function f has an inverse f−1 (read f inverse) if and only if the function is 1 -to- 1 .
Answer:
Step-by-step explanation:
8 over 2
Answer:
1). no
2). no
Part 2
A) (3,-2)
B) (1,0),(-3,4)
C) (4,0)
D) (3,2)
Step-by-step explanation: