A function is a relation that has one output for a given input.
For the first one, there is no one x value with two or more y values so it is a function.
The second example is also a function because a certain value can only have one cube root.
For problem number 3 input "-3" for every instance of x in h(x).
So, h(-3)=2(3^2)-1= 17
Answer: 100/25 and 4/1 and 60/15
Step-by-step explanation:
20/5=4, 100/25=4, 4/1=4, and 60/15=4
