Answer:
x=3
Step-by-step explanation:
By vertical line test, x=3 fails because more than 2 points have the same x value. Functions must pass the vertical line test.
Answer:

Step-by-step explanation:
We can factor out a 1 from -3 to get
.
We know from simple arithmetic that
.
So, our answer is 
Since 120 students gained less than 70, and 70 is the upper quartile, 120 people are in the 75% of all the students so we need to find the total number of students.
we need to multiply 0.75 (75%) by something to get 120. which is 160 (the total number of all students).
and since 48 is the median score, find 50% of 160 which is 80!
hope this helps :)
Answer:
ASA (the third choice)
Step-by-step explanation:
The pictures show that they have 2 angles congruent, plus the side between the 2 angles.