The graph below models the monthly average precipitation in inches at a town on a particular mountain over a 3-year period, where x is the number of months after April 2020. a. Find the minimum average monthly precipitation. b. Find the maximum average monthly precipitation. c. Find the amplitude of the graph. d. Estimate the period and interpret its meaning. e. Use the function p(t) = acos(b(t − c)) + d to model the monthly average precipitation, p, as a function of time, t, measured in months.
![The normal monthly precipitation at the Seattle-Tacoma airport can be approximated by the model shown below, where R is measured in inches and t is the time in months, with t = 0 corresponding to January 1. (Round your answers to two decimal places.) R = 2.876 + 2.202 sin(0.576t + 0.847) (a) Determine the extrema of the function over a one-year period. relative minimum (t, R) = ( ), relative maximum (t, R) = ( ), (b) Use integration to approximate the normal annual precipitation. (Hint: Integrate over the interval [0, 12].) in (c) Approximate the average monthly precipitation during the months of June, July, and August. in](https://www.doubtrix.com/uploads/editor/2944063509AgmljYiKFe.png)
![Definite integrals are useful to science because we can often describe natural phenomena using definite integrals. However, integrating functions arising in real-life science can be rather challenging. In this exercise, we see how having only the graph of some functions is enough to answer some questions in science. The physical interpretation of an integral is a prerequisite knowledge you learned in MATH 1013. For a refresher, see the Net Change Theorem in Section 5.4 of the textbook. A group of researchers studies the population of arctic foxes in Northern Canada. Initially, the researchers identified a population of 1,000 arctic foxes. Due to various factors, the population of arctic foxes changes over time. The graph of the birthrate B(t) and the death rate D(t), for the population, are shown below. Time t is measured in years. (1) In a sentence or two, describe the meaning of the function f(t) = t 0 B(x) - D(x)dx in the context of this problem. (2) According the graph, is there a time t between 0 and 20 at which the population is equal to the initial population? If so, provide a rough estimate of this time, and write one or two sentences explaining how you found it. Your estimate should be a single number, not an interval. (3) Recall from Quiz 1 the definition of the average value of a function f(x). The average value of a function f(x) over an interval [a, b] is denoted by favg and is defined to be favg = 1 b - a b a f(x)dx. Suppose you know that the average birth rate over the first 20 years is 90 arctic foxes per year and the average death rate over the first 20 years is 100 arctic foxes per year. What is the population of the arctic foxes at t = 20 ? Show your work.](https://www.doubtrix.com/uploads/editor/1288831183fhExDQGbmw.png)