What is the equivalent ratio of 5 to 20

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

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

If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.