5. range:(-1.2,0,1,1.2,3,4)
domain:(-2,-1.2,1.2,2,3,4)
the correct answer is A
even though most of the numbers are the same no one number is paired up with two different numbers. For example, (1,4) (1,5) <--- this is not a function because 1 goes to 4 and 5.
6. the values of the range are all the positive numbers: 0,7,9,12,21
the values of the domain are all the negative numbers: -12,-3
7. the following answers are false for f(x): f(1)=13, f(-9)=88, f(5)=-40
