Chapter 3 - Applications of Differentiation - 3.3 How Derivatives Affect the Shape of a Graph - 3.3 Exercises - Page 230: 55

$D'(t)>0$, $D''(t)<0$

If $D(t)$ is the size of the national deficit as a function of time $t$, then at the time of the speech $D'(t)$ $\gt$ $0$ (since the deficit is increasing) and $D''(t)$ $\lt$ $0$ (since the rate of increase of the deficit is decreasing).