Question 5: the domain of the relation is: {2, 2.1, 5.1, 5.5, 6}
Question 6: The relation is not a function because it two of the x value have the same y values. Therefore it is not a function as it does not pass the vertical line test. (-4, 0) and (-3, 0) both have 0 for the y coordinate. A function can’t have this.
$21,072 is the answer since you the original price is 43,900 and it has decreased 48% therefore using .48 to multiply with 43,900 to find the value after 3 years