To paint his house, samuel bought 2 cans of paint and one roller for $30. when friends came over to he went back to the store and bought 3 more cans of paint and two paint rollers for $50. how much did he pay for a roller?

Sample response: if the graph passes the horizontaline test, then the function is one to one. functions that are one to one have inverses that a therefore, the inverse is a hinction compare your response to the sample response above. what did you include in your explanation? a reference to the horizontal-line test d a statement that the function is one-to-one the conclusion that the inverse is a function done