Is the following relation a function? Domain
Range
0
3
5
2
11
13
21

Two lines parallel to the same plane are parallel to eachother

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

Consider the function f(x)=-5x+3 what is f(-2)