The rate at which temperature of an object is changing, in degrees F per minute, can be modeled by the function C(t), where t is measured in minutes. Selected values of C'(t) are shown in the 12 1 table below. Approximate the value of 12 C(t)dt using a trapezoidal sum with 3 subintervals indicated by the table. You may use a calculator if necessary. t 0 4 8 12 C(t) 8 10 5 10