we know that f(1)=2 so f^-1(2)=1
so B is correct!
Answer:

Step-by-step explanation:
5x-3>7
+3 to both sides
5x>10
divide 5 to both sides
x>2
Answer:
False.
Step-by-step explanation:
If we substitute a for 6, the inequality would become 6 > 6. That is not true because 6 cannot be greater than itself.
Answer:
B. Number the students on the school roster. Use a table of random numbers to choose 160 students from this roster for the survey.
Step-by-step explanation:
The area of triangle BXA is 15*sqrt(2).