A program to clean up underground storage tanks operates at a deficit. The number of years since November 2015, t , depending on the net spending of the program in trillions of dollars, n , can be estimated using the formula t=sqrt((n+0.539)/(−0.015)) Complete the sentence describing the time when the net spending was −$⁢1.5 trillion. Move the correct answer to each box. Not all answers will be used. Put responses in the correct response input area to answer the question. Select a response, navigate to the desired input area and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.