And then part B. Using correct units, explain the meaning of 1 over 10 times the definite integral from 0 to 10 of h of t dt in the context of this problem. Use a trapezoidal sum with the 4 subintervals indicated by the table to estimate this thing. So the integral from 0 to 10 of h of t is really the area of this entire, under this curve right over here. That's the integral, that's this part right over here. And then we're going to divide that by 10. So what this is really giving us, this expression right over here is the average temperature.