A commuter has $245 in his commuter savings account. a. This account changes by -$15 each week he buys a ticket. In one
time period, the account changed by -$240. For how many weeks
did the commuter buy tickets?

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