Marine scientists use a linear model for the speed c of sound in the oceans as a function of the salinity S at a fixed depth and temperature.† In the following table, one scientist recorded data for c and S at a depth of 500 meters and a temperature of 15 degrees Celsius. Here c is measured in meters per second and S in parts per thousand. Salinity S Sound speed c 35.0 1515.36 35.6 1516.08 36.2 1516.80 36.8 1517.62 37.4 1518.24 (a) Looking over the table, the scientist realizes that one of the entries for sound speed is in error. Which entry is it? S =  What is the correct speed? c =  m/sec (b) Explain in practical terms the meaning of the slope of the linear model for c in terms of S at the given depth and temperature. The slope means that, at the given depth and temperature, for an increase in salinity of  part per thousand the speed of sound increases by  meters per second. (c) Calculate c(38.2). c(38.2) =  m/sec Explain in practical terms what it means. This means that the speed of sound is  meters per second when the salinity is  parts per thousand.

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enlearning.com/assessment/showtest php?begin ohm assessment-1 Rukayat Balogun User Settings My Classes Log o ger Forums Calendar Gradebook all 2018 > Assessment g Equations of Lines Due Fri 12/21/2018 10:00 am The population of a suburb of Phoenix has shown a linear growth in the years 1994-2006. The population in 1994 was 45980 people and it has been growing at a rate of 790 people per year A) Write a linear equation expressin Answer: g the population of the town, P, as a function of t, the number of years since 1994. Preview B) If the to wn is still expeencing a linear increase, what will the population be in 2008? Points possible: 1 Unlimited attenpts. Messags9 Submit 1:34 PM DRLL 2

The.table.gives.the power consumption P in megawatts in a county from midnight to 6:00 AM on a day in December. Use Simpson's Rule to estimate the energy used during that time period. (Use the fact that power is the derivative of energy. Round your answer to one decimal place.) megawatt-hours Enter a number. t Pt P 0:00 1812 3:30 1611 0:30 1735 4:00 1625 4:30 1664 1:00 1688 1:30 1644 5:00 1745 2:00 1635 5:30 1884 2:30 1607 6:00 2056 3:00 1606