The Halls borrowed $1800 at 12% and took out a second loan for $2500 at 9%. The time period for the second loan was twice as long as that for the first, and the total interest paid for both combined was
$499.50. Find the length of each loan.

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