Trash is delivered to a dump-site between the hours of midnight (t = 0) and 6 a. m. (t = 6). Selected values of the rate of delivery are shown in the table below, with t measured in hours past midnight, and R(t) measured in tons per hour. Use 4 trapezoids to estimate the total amount of trash rounded up to the nearest ton that is delivered between midnight and 6 a. m. t (hours) 0 1 3. 5 6
R(t) tons/hour 4 2 3 2 1

What is the frequency of the sinusoidal graph?

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

Can someone explain to me how to do