Help with #2

2) Let y(t) represent the rate of change of the population of a town over a 20-year period, where y is a differentiable function of t. The table shows the population change in people per year recorded at selected times. The population at t=0 was 25,500 people. Time (years) 4 11 13 20 y(1) (people per years) 2500 2724 3108 3697 4283 a.) Use a trapezoidal approximation with four subintervals to approximate So y ( 1 ) di